[cLeEOGPw]

Yes, limit for human brain should exist, however anyone with the ideal of progress knows that there are a couple of ways to change that - genetic modification and artificial intelligence are few of the possibilities. So the limits exists only for us, not necessarily for our children. Just like our ancestors at some time in the evolution path had limits that made them incapable of even having language, children of the future might exceed all our limits by a scale we don't even imagine now.