You cannot make someone take the straight path. They must find it for themselves.
Yea, though I walk through the valley of the (5 o'clock) shadow of Death, I will fear no evil; for thou art with me; Thy blade and thy hone, they comfort me.
Oh, and as for the argument re Mach 3s giving as good or better shaves.....well, that is just not true. Mach 3s are fixed angle of blade on skin - the head pivots to keep it on your face as you move over the jaw line etc, if I recall correctly. With a straight there are often unconscious angle adjustments which enables a much better and more comfortable shave. That's not even mentioning the control over the edge you have with the hones, which you most certainly do not get with Mach 3s.
James.