Crackle said:
Mebbe, I quite believe semi's post. If you take such anecdotal evidence as valid then you have to take other anecdotal evidence with the same weight.
Which is the problem with anecdotal evidence...
There is a tendency to give credence and validity if it suits the agenda and there is no evidence involved
Anecdote 1 - I fell off my bike, hit my head and my helmet saved my life
Proves that helmets are essential safety items
Anecdote 2 - I fell off my bike and didn't bang my head, but broke my elbow
Proves that elbow protection is essential
Anecdote only refers to a single set of circumstances and is hence limited in its use and / or validity if applied to other areas or events.