Don’t take this as totally true, do your research, a lot of people have short fingers but they’re absolutely normal. Although studies found that a lot of people have Down syndrome have short fingers, but it depend on which finger comparison that would indicate the person have down syndrome. Einstern have short fingers but smart enough to discover the speed of light as E=MC2.
I have short fingers hand, and sometime embarrassing when I laid my hand out which looks a bit funny because fingers are so short. When I as in high school I was fascinated with Palmistry and researched about it, and found out I’m idealistic person based on the palm lines on my hand. Then today I discovered that my fingers are short, and again I did some research and found out that I must had have down syndrome, which be true because I do have a little of difficulty learning and comprehend things quickly, I’m pretty show. For some other people, for then men, saying short finger would tied to short “penis”.