Science is about taking the best evidence and drawing conclusions, even if tentative.
Exactly. And if our evidence shows that using preliminary results is unreliable - that it identifies very few relationships that are shown to be valid with additional testing - then
that evidence should also be taken into account when trying to draw conclusions. If you are just as likely to experience harm as you are benefit, and you are much more likely to experience not much of anything, with the use of a particular supplement, why would the best conclusion be "I should spend lots of money on this supplement"?
You did. You said that Double X was better than multi-vitamins and you justified this by referring to the way in which it was produced and monitored. Regardless of the specific amount, the excess price partly reflects excess production costs.
You often have this tendency to mix up science decisions and business decisions. Science says little about price. Business, and economics, says charge the highest price you can. When the marketplace considers you have little competition, you can drive the margin wherever you please. The market decides whether it's valued sensibly or not.
I understand the difference between the price of a product and the cost to produce a product. This is relevant to one of my areas of production - fibre arts. However, your description is not of two products that have equivalent production costs. And like I said earlier, you have simply captured a population who will pay extra for a story they find believable. That the story is false seems to be of little relevance to you, but it is arguable that this is "sensible".
What claims? I don't recall I've made any. Please, what "kind of claims are being made"?
Your most recent claim was this:
"The added value for a consumer absolutely comes in terms of health"
"The Amway Daily Multivitamin is *cheaper* for twice as much! (and IMO clearly better)."
"Yup, cheaper than the costco product of worse quality."
http://www.internationalskeptics.com/forums/showthread.php?postid=4759169#post4759169
You haven't presented any comparisons of these products to generic multivitamins. When asked for evidence that Double X is beneficial, you made reference to a study comparing it to placebo.
By your standard of "conculsion", I entirely agree. Never said it did.
Then why did you state that the added value was in terms of health when you have no studies looking at differences in terms of health?
And you claim plants are better sources of nutrition than supplements. Except if they're the same shape as vitamin supplements, in which case the isolated vitamin supplements are better!
My claim is that normal amounts of plants is better than miniscule amounts of plants, and that 3 cent vitamin pills are equivalent to 231 cent vitamin pills.
Yet you continue to provide no support at all for your apparent belief that the form a plant is presented it makes such a huge difference.
Because I have never made that claim.
Oh good grief, we've discussed one study which I stated I haven't even read for a long time. Talk about making conclusions from limited evidence!
You have made reference to several research studies and to a body of research that I also can access. You have stated what conclusions you have drawn from this research. It is based on more than the one study we discussed in detail, although even that conversation was very revealing.
You however have clearly demonstrated your inability, nay, refusal, to synthesise research and draw tentative conclusions - an important part of progressing science.
There is a difference between the progress of science and making recommendations to people in order to maximize health and the justifying of a high price by misleading people as to the value of those tentative conclusions.
Really, with regards nutrition we essentially just come down to differences of philosophy. I'm willing to make a "best guess" in regards to what I think is best for my health based on whatever research is available. You're not willing to unless the science is of the highest quality and absolutely conclusive. That's fine, it's a philosophical position that's perfectly acceptable. So is mine.
It is your prerogative to make a "best guess" in a way that is more likely to be wrong than right. What I am complaining about is the marketing of your choice to others as though it is a sensible thing to do. And of the substantial negative effects of this marketing, which I have mentioned previously (e.g. waste of billions of dollars of resources, mis-education of the public as to what constitutes evidence for a relationship, encouragement of pill-popping as a solution, etc.)
Linda