Maybe it also trained on forum posts. I find myself constantly couching everything I write here with "usually" and "might" because if I don't, there is always some nit-picker that pops out of the woodwork for a cheap and easy "aha! Here is a counter-example to what you just said, therefore your point doesn't apply universally and is invalid!" Adding these qualifiers is automatic for me at this point, to avoid the hassle of dealing with pedantry.