Andreas re 2 + 2 = 5
Certainly. I've seen people "clearly know" (not just imagine) an incorrect number.
Could you fill this out a bit? There's some relation (don't ask me to say exactly what it is) between knowledge and certainty; but it doesn't follow from someone's being absolutely certain that x, that x.
Robert Paul speaking from experience ------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html