It is not the only
LOGICAL explanation.
The Big Bang Theory Season 5, Episode 20
There's no the LOGICAL order
to eat them in.
The Big Bang Theory Season 5, Episode 17
The only LOGICAL explanation
is that this is a dream.
The Big Bang Theory Season 5, Episode 20
It's only LOGICAL.
The Big Bang Theory Season 5, Episode 20
...the original Robin, Dick Grayson,
is the LOGICAL successor to the Bat Cowl.
The Big Bang Theory Season 2, Episode 20