Both the appendix and the outer ear and jaw protrusions have reduced significantly.
This proves nothing.
Also, it if causes Cancer and provides no benefits, yes it is weeded out. Thats how it works.
Who says it causes Cancer?
Evolution works by random mutations. Your genes don't go picking out what parts they like/dislike and put that in your kid. It's mostly random chance+situational fitness
Just because something might have more benefit for not being in your system, doesn't mean it'll be removed by evolution.
I had an owie but i didnt react.
I once had this happen to me. Got hit by a motorcycle while on my bike. I woke up on the floor, stood up, saw my family members standing around the motorcyclist, screaming at him (I still don't get why no one came for me though, wtf?). I got up, walked over to him, shook his hand and fucking ran home, because my bike was too fucked up to ride.
Couldn't walk for a week afterward.