Wednesday 29 July 2009

Can we ever blame a doctor?

A recent study finds Singapore-trained doctors "more lenient" on peers' ethics. One person responds. We study this response.

Source: The Straits Times, 25/7/9, p.A45 (letters)
Headline: Two views on doctors' views
Writer: Dr Yik Keng Yeong

Quote1
Once past the prime considerations of patient welfare, professional competence and civil law infraction, tolerance of minor indiscretion and misdemeanour is but recognition of man's and doctor's fallibility. ...

Comment1
The position taken here is one of "tolerance" and "recognition of fallibility". Notice its scope. The "prime considerations" are specifically excluded, and only what is "minor" is specifically included. It follows by definition that what is minor can (or even should) be tolerated.

Quote2
Doctors are ... inclined to be cognisant of their own human foibles and frailties, ... especially so as the practice of medicine is so fraught with daily pitfalls that only he who has not sinned can cast the first stone.

Comment2
If a kettle is black, even a black pot can truthfully say "The kettle is black." The claim that a pot cannot call the kettle black commits the Tu Quoque (you too) fallacy, and must be rejected.

Quote3
If doctors take to heart the sapient Chinese proverb ... (We should forgive wherever we can), ... the last cynical conclusion we should draw is that there is a conspiracy of tolerance. ...

Comment3
This is a conditional statement: "If doctors ..., (then) the last... tolerance". This is not an argument. No conclusion or position is drawn from it.

Quote4
Even where discipline is required, everyone deserves a second chance.

Comment4
What do we do on the third incident?

Quote5
Where intra- or inter-departmental punishment suffices, advocation of further craconian measures serves no purpose but to tar reputations and destroy careers. ...

Comment5
Note the word "suffices". It follows by definition that no further action is warranted. The question is when do intra- or inter-departmental punishment suffice, especially bearing in mind Quote3 above?

Quote6
Perhaps many of them [foreign trained doctors], provisionally registered with the Singapore Medical Council,will treat any survey with undue suspicion and offer politically correct answers they feel will not jeopardise their chances of re-registration with the council, nothwithstanding the assurance that all data collected is private and confidential.

Comment6
This says that the foreign-trained doctors circumstances have biased their responses. The argument commits the fallacy Argumentum ad Hominem Circumstantial (Appeal to the person, circumstantial), and must be rejected.

END

Can we accept a fat Doctor-in-Chief?

Obama's nominee for US Surgeon-general is overweight. Critics object to it. We look at the argument.

Source: Today, 24/7/9, p.22
Headline: Too big for the role?

Quote1
WASHINGTON: President Barack Obama's nomination of Ms Regina Benjamin as America's surgeon-general has faced a barrage of criticism frommedics who claimshe is setting a bad example because of her weight. ...

Comment1
A pot accuses a kettle of being black. The kettle retorts: "So are you!" This does not result in the kettle no longer being black. The truth of an accusation does not depend upon the accuser being free of the same charge. An argument of this nature is known as the Tu Quoque (you too) fallacy. In this case, a person does not have to be a picture of perfect health in order to be a surgeon-general.

Quote2
Said Dr Lillie Shockney, director of the Johns Hopkins Avon Breast Centre: ... "I want an image of wellness, because young people will hear her better if she is practising what we expect her to preach." ...

Comment2
This is a psychological effect. Listeners should learn to ignore the image of the speaker and focus on the substance of what is said. The more we cater to fallacies and irrelevancies, the more they will perpetuate, and the longer we will remain in confused thought.

Quote3
The National Association to Advance Fat Acceptance said: "Despite exceptional qualifications, the criticism focuses on her weight!"

Comment3
Even if Ms Benjamin did not have "exceptional qualifications", the objection is still a fallacy.

Quote4
Others have pointed out that previous male surgeon-generals have not been pictures of slimness. -- The Daily Telegraph

Comment4
The thrust of this comment needs to be spelt out. In this unclear state, any of the following could be a response:
1. Only female surgeon-generals have to be slim.
2. Those past appointments were wrong.
3. Yes, slimness is not a requirement in a surgeon-general.

END

Thursday 23 July 2009

Are things finally looking up?

One analyst says the end of the tunnel is in sight. We examine the commentary piece.

Source: Today, 15/7/9, p.B8
Headline: Reflation, liquidity the way to go
Writer: By Bob Doll

Quote1
Global equity markets have been volatile this year. After sinking sharply in January and February, ... global equities went on a tear in the next couple of months -- but now it seems the rally that started in early March has run out of steam. ... Since the bear market began in earnest last September, ... there have been several global equity rallies that failed to take hold. ...

Comment1
These are assertions, with no supporting argument.

Quote2
The rally that started in March was different. That rally which, from trough to peak, has resulted in global price advances of around 30 percent, was based on a combination of technically oversold conditions, aggressive global policy actions and a general sense that the global economic recession was moving past its period of greatest weakness.

Comment2
Here is a claim of a different rally. The difference? A 30 percent advance, as contrasted with "rallies that failed to take hold". There is no explicit statement that the "combination" caused the rally.

Quote3
The extent to which equities are able to continue to advance will depend largely on the degree to which the global economy is able to recover. ...

Comment3
This sounds like it is true by definition.

Quote4
The massive policy initiatives around the world have begun to bear some fruit. The dramatic increase rate cuts, spending increases, tax cuts, capital injections, bank rescues and plethora of new government programmes have all helped to combat ongoing credit-related deflation risks.

Comment4
What are listed are the "massive policy initiatives". What are the "fruit"? We are not told.

Quote5
We believe the fourth quarter.... We expect a small gain.... We also expect to see modestly positive.... We believe equities are entering a correction phase.... We believe this correction will be marked....

Comment5
Here are more predictive assertions -- again with no supporting argument.

Quote6
We think it is extremely unlikely that prices will retreat back to their early March levels. Typically, such corrections result in a give-back of between one-third to one-half of recent gains which, in the US, would result in a short-term drop to between 800 and 850 for the Standard & Poor's 500 index. ...

Comment6
Here's the argument:

Reason: Typically, less than full corrections.
Conclusion: Hence, no full retreat to early March levels.

The success of this argument depends on the future being like the past.

Quote7
We expect improving economic conditions.... We believe that stocks will outperform....

Bob Doll is vice-chairman and global chief investment officer of equities at BlackRock.

Comment7
More predictive assertions -- and no supporting argument.

Comment8
The issue under discussion is one on which there are many differing expert opinions, unlike on the question of how long an object will take to fall 20 storeys. In this case, expert opinion alone is insufficient. Arguments must be provided (see Quote6 above).

END

Tuesday 14 July 2009

Should we turn vegetarian?

A British study finds a benevolent link between vegetarian diet and cancer. We investigate the report.

Source: The Straits Times, 2/7/9, p.A21
Headline: Vegetarians less likely to get cancer

Quote1
LONDON: Vegetarians are 12 percent less likely to develop cancer than meat eaters and the advantage is particularly marked when it comes to cancers of the blood, British researchers said yesterday. ...

Comment1
This is the news point. Now let's look at the details -- before deciding if we want to suddenly turn vegetarian.

Quote2
The new study, entitled Cancer Incidence in British Vegetarians, involved more than 60,000 people and it confirmed a lower risk of both stomach and bladder cancer for vegetarians, Reuters reported. ...

Comment2
The study is limited to British vegetarians. It may not apply elsewhere. It has a large sample of 60,000, which increases its generalizability over the population of British vegetarians.

Quote3
The most striking and surprising difference was in cancers of the blood ... where the risk of disease was 45 percent lower in vegetarians than in meat eaters. ...

Comment3
The drop is greatest in blood cancers.

Quote4
The ...effect ... did not seem to stretch to bowel cancer. ... And the study found that the incidence of cervix cancer was two times higher in vegetarians than in meat eaters.

Comment4
Bowel cancer is unaffected; and it's worse for cervix cancer.

Quote5
Prof Key and his co-authors, from universities in the United Kingdom and New Zealand, followed 61,566 meat eaters and vegetarians for over 12 years, during which 3,350 of the participants were diagnosed with cancer.

Comment5
Of 61,566 persons, 3,350 developed cancer. This is an incidence rate of 5.44 percent -- or one in 18.4 chance, regardless of diet.

Quote6
"At the moment, these findings are not strong enough to ask for particularly large changes in the diets of people following an average balanced diet," Prof Key was quoted as saying by the BBC.

Comment6
Well, here's the bottom line: No need to rush into vegetarian mode -- if you're British.

END

Is a photograph also a painting?

The recent UOB Painting of the Year contest was won by a set of photographs. Some find this odd, others do not. We investigate.

Source: The Sunday Times, 5/7/9, p.7
Headline: Stir over photo win in painting contest

Quote1
A series of photographs have again won United Overseas Bank's (UOB) Painting of the Year competition. ...

Comment1
This sets the context.

Quote2
Yesterday, art enthusiast Gong Pan Pan, 23, said: "I think the title of the competition becomes very misleading if they keep awarding the top prize of a painting competition to a photograph. If the competition has changed its focus from painting to image in general, it should be renamed." ...

Comment2
The claim is straightforward. A painting competition should be won by a painting. More generally, a word must be correctly applied, or defined.

Quote3
Lecturer and artist Hong Sek Chern, 42, suggested that the term "painting" could be defined simply by its presentation of being hung on a wall. She did not mind the expansion of its definition. She said: "If the judges accept a sculpture hanging on a wall as a painting, it would be fine." "As a painter, I feel that it is very exciting for photography to push the limits of painting." Miss Hong added that this concept of hanging a sculpture on a wall had in fact already been done elsewhere.

Comment3
The suggestion is to define "painting" as "anything presented by being hung on a wall". On this definition, a photograph is a painting if it is hung on a wall. So also a sculpture, which have been done elsewhere. Think of other items that have been hung on walls. Would you consider them paintings too?

Quote4
Nanyang Academy of Fine Arts president Choo Thiam Siew said that the public must accept the changing concept of a traditional painting. ... "Photos are no longer just beautiful pictures of idyllic scenes. Nowadays, they have strong, impactful messages. To me, a photograph becomes a piece of art if it has something to say, brings out an issue, and has the feeling of the artist in it."

Comment4
This suggestion is that (photograph + something to say + brings out an issue + has artist's feelings) is a (piece of art). But is it a painting? We are not told.

Quote5
Indeed, one of the judges, Mr Koichi Yasunaga, ... did note that the painting submissions were not as "impactful" as the photographs. ...

Comment5
"Impact" is now suggested as another criterion -- but for (photograph) or for (piece of art)?

Quote6
Visual artist Michael Lee, 37, ... said: "The photograph won, not because it was a photograph but because it was a critical and innovative expression of the artist's interest."

Comment6
We have more criteria: (critical expression + innovative expression + artist's interest). Again, are these criteria for (painting) or (piece of art)?

Quote7
Pausing, he said that perhaps the name of the competition could be changed to perhaps "2-D Art of the Year" or "Image of the Year". But then he saw how this could be a problem too. He said: "2-D Art of the Year sounds very crude, while some images could be text-based."

Comment7
An alternative to redefining "painting" is to rename the competition -- but both these suggestions also run into problems.

Comment8
Socrates was concerned with discovering the correct definitions of terms. Confucius was concerned with the rectification of names. Ambiguity is the source of much confusion and conflict in life. It behoves us to use language clearly and precisely.

Is this competition intended to be a search for excellence in a specific medium, or a search for artistic excellence in general? Once this is clearly understood, it will be a straightforward matter to give the competition its correct name.

What ought not happen is that this linguistic haze continue to linger.

END

Water, water everywhere ... and not a drop to drink

Some diners are upset over some restaurants not offering free tap water to their patrons. Restaurants defend themselves. We analyse the arguments.

Source: The Sunday Times, 12/7/9, p.11
Headline: All stirred up over drinking water in restaurants

Quote1
A blogger, upset that a restaurant would not serve her tap water which she needed to take her medication with, is urging diners to boycott such outlets. Miss Veron Ang -- urged on by some netizens -- went further and posted on her blog a list of 62 restaurants that she claimed do not serve free water. ...

Comment1
This is the context.

Quote2
The managing director of Italian restaurant La Forketta, Ms Gracie Vitalie, said: "Our patrons are serious diners and come for our food, not to taste water. It's the customer with a budget who insists on tap water." She added that, outside Singapore, "nobody really asks for tap water". ...

Comment2
There are two arguments here.

Argument1
Premiss1: If (serious diner), then (not request tap water)
Premiss2: Serious diner
Conclusion1: Hence, (not request tap water) [to Premiss4]

Premiss3: If (not request tap water), then (not serve tap water)
Premiss4: Not request tap water [from Conclusion1]
Conclusion2: Hence, (not serve tap water)

Both parts of this argument use the Modus Ponens (If P then Q, P, hence Q) argument form, and hence are valid. If Premisses 1, 2 and 3 are all true, then Conclusion2 will also be true.

Argument2
The statement "nobody outside Singapore really asks for tap water" is an assertion that stands or falls depending on the actual state of the world. If the statement is intended to be a basis for "Hence, people in Singapore should not ask for tap water", then the argument commits the fallacy Argumentum ad Populum (appeal to the gallery) and must be rejected.

Quote3
Mr Jack Chin, co-founder of Mad Jack's, said his chain of four restaurants does not serve free water because manpower is needed to refill and wash the glasses. He added: "People who complain are not educated about business costs because nothing is free". ...

Comment3
There are also two arguments here.

Argument3
Premiss1: If (free water), then (more manpower)
Premiss2: Not-(more manpower)
Conclusion: Hence, not-(free water)

This argument has the valid Modus Tollens (If P then Q, not-Q, hence not-P) argument form. If Premisses 1, 2 are true, then the conclusion is also true.

Argument4
Premiss1: If (educated), then (not complain)
Premiss2: Complain = Not-(not complain)
Conclusion: Hence, not-(educated)

This also has the valid Modus Tollens argument form. Premiss2 is true. If Premiss1 is also true, then the conclusion is also true.

Quote4
Sales manager Renee Koh, 32, said: "Serving plain water for free should really be part of the service experience and I find it hard to think that the costs are that high, given that the water served is just chilled tap water."

Comment4
This is a rebuttal of Argument4 Premiss1, suggesting that the educated patron will see free tap water as part of the service, and will complain of poor service if free tap water is not provided.

Quote5
Mr Aun Koh, director of media and lifestyle consultancy Ate Media which published Asia's first restaurant guide The Miele Guide, said: "In Singapore, there is ... no reason other than an attempt to increase revenues for restaurateurs to refuse to offer tap water to their patrons."

Comment5
This is an assertion, and is not offered as part of any argument.

END