Hi guys, I'm a technical layman and I'm wondering if you could do the following:

 just suppose that through quantum computing or whatever, Bitcoin encryption becomes insecure. Couldn't you then just use the latest encryption methods to update the old Bitcoin encryption method so to speak? So by making the old private Bitcoin key secure again with a new method and combining it somehow.

  Of course I don't know if this really works, but there should be a possibility to upgrade the Bitcoin encryption somehow? Or will the encryption remain unchangeable forever?