This article is from the Magic FAQ, by Paul Nielsen email@example.com with numerous contributions by others.
POLLING RESULTS: compiled by Hans Masing.(HCM100@PSUVM.psu.edu)
There were 48 responses within the allotted polling time. 35 were
magicians, 13 were laypersons.
The average age of magicians in the poll is 32.2 (mean of 26). The
typical layperson is 31.7 (mean of 27).
For magicians, the average experience is 12.9 years, however there were
a few outliers with more than 30 years that skewed the results.
Eliminating these outliers, the average experience drops to 2 years.
Of the 35 magicians who responded, 46% of you say that methods should
not be revealed, 43% say that they should, and 11% are undecided.
Not surprisingly, of the 13 laypeople who responded, 33% said that it is
detrimental, 54% said it is not detrimental, with 13% undecided.