It's not damage, it's an improvement! (said in a non-confrontational manner!)

ETA: who would you seriously call being left-handed being brain-damaged? It's like calling dyslexics brain-damaged: OK, so their word skills are less good than "normal" but they're not brain damaged, but being left-handed affects nothing like that, just your dominant hand! And 90% of polar bears are left-handed, go and insult one of them, you silly sonographer!