However, I am making a statement about my belief as to the state of the world. I believe it is a fact that even though people should know fractions, many do not. And I believe it is a fact that many people become uncomfortable when they see an expression with the appearance of a fraction.
Because I believe those facts to be true, I think that the introduction of tau would be counterproductive and would make it harder for young people to catch up due to their discomfort. Thefore, I think Tau should only be introduced after or in concurrence with other efforts to improve mathematics teaching.