@Baysiri Wait, that's your hangup about a spider larger than a human? You've never considered what an exoskeleton does to their heat regulation or what their lack of red blood cells does to their circulation and what that does to their physiology once they reach a certain size? You instead focused on their instincts, a trait easily amended by intellect, which itself tends to grow with the size of the brain? Also, in a world where the laws of physics are different, why would you expect the evolutionary process to even remotely mimic ours? Isn't the weird part that they have spiders that look so similar to ours? Why would a spider that has a completely size and therefore a completely different way of hunting things than real-life spiders anyway be expected to mimic their smaller counterparts?
Think.