2026-08-08T18:21:29Ztag:sursumcorda.salemsattic.com,2018:/isso/thread/post/sign-language-in-the-museo-galileotag:sursumcorda.salemsattic.com,2018:/isso/1507/50262026-08-08T18:21:29ZSursumCorda<p>Purely my speculation, based in part on what I gathered from Janet's experience with Japanese Sign Language, I suspect that one factor the various languages have in common is reliance on expression, motion, and spatial relationships. That may help in a sense similar to the way knowing one Romance language makes it easier to get along in another Romance language.</p>tag:sursumcorda.salemsattic.com,2018:/isso/1507/50252026-08-08T17:28:59ZKathy Lewis<p>There is at least a fair amount of overlap between different sign languages. My Brazilian friend Rosemary in Gambia had learned Brazilian sign language beforehand, and transitioned fairly easily into Gambian sign language.</p>