
Of course, I'm already seeing
a more EFFICIENT way of taming the--
The Big Bang Theory Season 9, Episode 10

came up with a more EFFICIENT
neutrino comm system.
The Big Bang Theory Season 11, Episode 8

...which increase point-to-point drive time,
making it the less EFFICIENT choice.
The Big Bang Theory Season 2, Episode 5

That seems a fairly EFFICIENT arrangement.
The Big Bang Theory Season 2, Episode 15

It would be way more EFFICIENT.
The Big Bang Theory Season 11, Episode 8