
- Keen OBSERVATION, goodbye.
- You see where you went wrong, don't you?
The Big Bang Theory Season 1, Episode 12

True. I've had a similar OBSERVATION.
The Big Bang Theory Season 2, Episode 15

...correcting for OBSERVATION bias
and postulate an initial dating age of 15...
The Big Bang Theory Season 4, Episode 1

The OBSERVATION period
is almost over,
Westworld Season 2, Episode 4