Just for fun:
$s = 'YANDS';
substr( $s, 0, 1) ^= substr( $s, -1 ) ^= substr( $s, 0, 1 ) ^= substr(
+ $s, -1 );
print $s;
SANDY
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.