But you cannot be absolutely sure.
Unlike a fact, a theory cannot be absolutely true.
"The constitution is not something that cannot be absolutely changed.
A small turquoise faience baboon, 8.8 centimeters high, is a masterpiece of understated irony, so discreetly wielded that one cannot be absolutely sure that mockery was intended.
It's here that constitutional minds cannot be absolutely certain and the discussion extends to lawyers in the ranks of the government's administration.
"I'm confident of that, but I cannot be absolutely sure that there has not been the odd digression, or that there won't be in the future.
Ten years ago he was dying of AIDS, and now we think he still is, although we cannot be absolutely sure.
But the 18percentt of the nation's television households in the Pacific and Mountain zones cannot be absolutely certain a "Live" graphic really means the event is live.
The efficiency of the England pace bowling means that Darren Gough, Caddick and Matthew Hoggard cannot be absolutely guaranteed to be reinstated whenthey recover full fitness.
We cannot be absolutely certain who St George was, but it is generally believed that he was a Christian of Greek descent from Cappadocia, which is now part of Turkey.
After all, given that the wives are not present, he cannot be absolutely certain that one of them hasn't died or run off with another man since he last saw them, even if this was only five minutes ago.
