/sci/ - Science & Math

>>8576182
>McGraw-Hill
>not Pearson

>X-mas dinner
>We're talking about the history of life on earth
>As a cool fact, I point out that the time period from the rise of the dinosaurs to their fall was longer than the time period from their fall to the present
>me: who knows how much longer they would have existed were it not for the Cretaceous extinction event?
>Dad: I don't think they would have been around for too much longer, I mean they were so big, that they were bound to die off if they got any bigger. If you get too big you eventually fail.