The big toe nail could easily have evolved into a weapon. Like the horn on a narwhale.
I have cut the back of my ankle with it twice in my life, when I haven’t cut it down properly
Just walking along barefoot, and BAM- I’m bleeding.
20,000 years ago I think I could have used it while fighting over an animal carcass.
These are the thoughts I have while cutting my toe nails. I knew you’d want to know. You’re welcome.