I wrote: " ... sentences of the sort 'All swans are white' should always have the implied caveat of 'so far as we know'." That should be 'implicit caveat' I suppose. I know Robert and perhaps others notice these mistakes. Sincerely, Phil Enns etc. ------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html