Because so many logical errors that seem to be perniciously pervasive and persistent involve incorrect notions of implication relationshipsthat is, the concept of "if___then___"we want to understand as much as we can about this much studied oddity from the cognitive sciences. The intense interest in the puzzle was kicked off by a book published in the early 1970's by Percy C Wason (Cambridge University). It was the subject of many popular publications, and Martin Gardner put a related, fivecard, puzzle with a diabolical twist in his "Mathematical Games" column in Scientific American. Some of the published research was reminiscent of Richard Feynman's observation of the lack of understanding of virtually all of the authors of published K12 science textbooks: "...written by people who don;t know what the hell they are talking about." The authors of the research and textbooks are very bright people, but neverthless sometimes eminate an aura of blindness to this important dimension of perception of patterns at the edges of human comprehensionpatterns of patterns of...that constitute the more abstract mathematical patterns. The relationship to the error of "Energy is the capacity to do work" is particularly noteworthy. The widespread confusion of the energy of science with the energy of common use (Aristotle's concept) is one of the most important of common oversimplifications to be overcome before we can understand the simple (but subtle) basis of today's science. It's worth a lot of effort to anyone who wants to get a leg up on seeing science. One crucially important
observation about misperceptions of "if___then___", is that people
who are extremely intelligent by conventional notions of "intelligence"
("IQ or "gfactor," etc) might still be "logic blind" to that pattern of
pattern (of pattern of...) which is implication 
blind to that Boolean thing which logicians represent with their Boolean
equation.

A firkin is 18 pottles, and calculating such unfamiliar conversions will be easy once ratios are understood. ...and look at the alternative test for climbing the five steps:
In the picture, measure the ratio of wall
height to the height of the tallest person.
Two of the symbols are put in boldface:
this indicate that they are vectors.
Some details of the difficulties are at the bottom of this page. 
Who can point out specific errors? What percentage of people use such reasoning? Pseudoscientific beliefs are based on similar
lines of reasoning.
A course in elementary logic, in Boolean relationships, addresses such errors.
logical pattern which shows up in very many errors of logc. The errors in the above make simple associationsCorvallis
resident  lottery winner,

