Not a failure at all, friend. Let me ask you this: if you were in a car accident and lost a leg, and then had children, would all of your children be born without a leg? Then why does one infer that all men after Adam would have one less rib? Use a little logic...it goes a long, long way.
Ah, VR, I'm glad you are here.
i have a question that will make the creationists yelp for joy, but I think it needs some attention.
The area of human evolution is an area I know only rudimentary things about. There is much empahsis on braincase size on both sides.
1. I take it that it is not only the brain case size (volume) that is used to show lineage, but also what parts of the braincase are increasing?.
2. i ask this because of the common observation like this one: My neighbor on one side has a St. Bernard - really big and really stupid. My neighbor on the other side has a chihuahua, small yappy, but quite "smart". Considering the anatomy of a dog (all the same muscles, bones, etc. for both large and small dosg - is there increased nervous tissue in a large dog?), it seems that a chihuahua's brain would be capable of operating a St. Bernard. What's all that extra brain material doing in the St.Bernard? I think it's sawdust, my neighbor won't let me do an autopsy on that St. Bernard while he's still alive.