My physics/chemistry instructor doesn't believe in evolution (a fact she brought up for no reason other than to seem smarter than us), and another student asked why. She said because the chances of the 4 nucleotides that make up dna (ACTG) meeting to create life were too small (biochemistry isn't about chance), that if it happened by chance that she sees no reason why we shouldn't be silicon based since there's sand everywhere and it's in the same group as carbon and has four valence bonds like carbon (seriously, a CHEMISTRY instructor should know the reason why, that being that silicon does not support the ability readily to re-combine in different permutations in a manner that would plausibly support lifelike processes), and that there hasn't been species observed evolving into other species (there has, and this isn't the only thing that supports evolution). I told her that fossil records show evolution in action, and she said 'I don't believe that it does'. I told her science doesn't care about what people believe. Seriously I was like this all class:
I explained to another student who said she doesn't believe in evolution how we can know something as a fact, and she said "Well I believe anything is possible." Anything except evolution, apparently.