Signers can recognize other systems if they've had prior exposure. I have read in at least one reliable source that signers find it slightly easier than speakers do to cross the "language barrier," i.e. to establish communication with someone using an unknown foreign system. But national systems vary significantly, and that doesn't begin to take into account the vast number of home and community systems that have developed. For instance, I have never met a signer who uses a pure version of any of the American systems like American Sign Language or Signed English. All use hybrid systems adapted to their comfort level and the people they are with. But I don't know very many signers, so these are mainly impressions.

Krista C.
From: Constructed Languages List [[log in to unmask]] on behalf of Leonardo Castro [[log in to unmask]]
Sent: Thursday, September 18, 2014 3:23 AM
To: [log in to unmask]
Subject: Re: THEORY: Recognizing languages without really learning them

2014-09-16 20:13 GMT+02:00 Matthew George <[log in to unmask]>:

> It would probably be more productive to get a really good
> speech-recognition program and teach *it* how to distinguish between the
> top one-hundred languages.

Maybe 007 will be in situations where he can't take electronic devices with

> I doubt that a human could retain the ability to do so for more than a few
> months, top.

What about the 20 most spoken sign languages? I don't even know if sign
language speakers can recognize foreign sign languages or regional accent.

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