My point is that it isn't an engineering problem because it is the best engineered method and that if you think you could "engineer" it better, please let me know. At this point, all you are doing is making a point without a suggested better-engineered way of doing it thus making your point mute.
And like I said before, if you crash driving 150 mph on a sharp curve, it isn't an engineering problem. If you swallow a big piece of meat without chewing and then choke, it isn't an engineering problem. Quite simple IMV.
No, it is what you said. You said that the brain grew (evolution) but the mouth didn't. An engineering problem by your world-view of evolution especially if you admit that there are design flaws.
Again... I don't agree with your position that bipedalism is bad for the back. Bad posture, no exercise, too much sitting down, bad eating habits, abuse to the body... I believe these are the problems that affect the back. Are you saying that the things I mentioned don't affect the back?
Can't compare apples with an orangutan.
You brought up sports and now you are taking sports away. I will admit that age will affect your body but it isn't because of bipedalism, it is because we age. Now, taking into account the abuse we give our bodies and you have early pains.
And I disagree.
And I disagree. Our spine was created for bipedalism.
I believe the mechanism and the muscle system DOES in fact close up one direction so that food and water never reach the lungs.
now, chew your food at least thirty times, don't overstuff your mouth, let the saliva begin the digestive process and "voila" you don't choke. Your perfectly engineered esophagus will work correctly and you won't die from asphyxiation.
Quite simple.