HTC Incredible :: Put Speaker On Back Of Phone?

I'm sure the engineers who build these phones are quite brilliant individuals, and certainly, at least one of them has figured out by now that, "Hey, if we put the speaker on the back of the phone, the sound is going to be muffled when the phone rings!"So I'm just curious if there is some logistical/technical reason why this is done? I figure it would be much better design-wise to put the speaker on the front, or maybe even on the bottom. Other than not being able to see the screen in direct sunlight, this is the only real gripe I have about the phone thus far.Also, do you guys lay the phone face down when not using it, assuming you'd otherwise sleep right through the phone ringing when sitting on its back?