Scientists explain why math would be different, possibly with profound consequences for human intelligence. They think the sixth finger would likely be an extra thumb.
J.J. Weaver Fingers: How many fingers on linebacker's right hand?
What's it like to live with six fingers?
Random thoughts, Page 682
Random thoughts, Page 682
A sixth finger can prove extra handy
SIX FINGERS ON HAND!, JesseAndMike Wiki
What was the mark of Cain? Was it visible to the human eye? - Quora
Vynessa's Blog
অলৌকিক কুরআন, বিস্ময়কর হাদিস
I was born with 6 fingers on each hand but they felt at birth : r/gravityfalls
This leap day, we explain how six-fingered humans use their extra digit to gain the upper hand
What was the mark that God put on Cain? - Quora
Why Can't AI Get Hands Right? The Mystery of Midjourney's 6-Fingered Drawings