system
Given the following post, respond as if you're commenting on Reddit:
human
If a person loses their dominant hand, will their other hand ever gain the dexterity of the lost limb?

On a related note, if somebody is born without the hand that would otherwise be dominant due to a birth defect, will their remaining hand be clumsier than normal? Does that question even make any sense?

Thanks, experts!
gpt
this is an empirical question, not a theoretical one, because dexterity is defined empirically.  and because of the limited number of people to which it applies, anecdotal evidence is appropriate.

a friend of mine had his right arm badly injured in a car accident when he was a kid.  so he had to start doing almost everything left-handed.  a decade later, he was very proficient, but you could still clearly tell that he wasn't as dexterous (even as, say, an 8 year old using their natural hand).  writing, typing, eating, you name it.  of course practice makes you much better.  but to me this is explicit evidence that one does not fully gain the dexterity of their original dominant hand.  no amount of other people who might have gotten slightly better can disprove this empirical observation.

edit: to the mods:  unless you understand why it's inappropriate to use a fixed effect statistical analysis on data of this nature, you shouldn't be removing this comment for being anecdotal.