Its is messy; practically humans think that number which goes after the name means version or something like that.

Of course they do! perl5 is the fifth revision of Perl. When I type perl -V on my computer, I get perl5 (revision 5 version 20 subversion 1) There were perl, perl2, perl3, perl4, and now perl5. Why would people think that the so-called 'Perl 6' is something totally new rather then the continuation of the old pattern?

Anyway, I don't even know just how different 'Perl 6' is from Perl 5, cause I have zero interest in 'Perl 6' at this point.