As a scientist, I reach conclusions
BASED on observation and experimentation.
The Big Bang Theory Season 1, Episode 10
...the success or failure of the date would
be BASED on the biochemical reaction...
The Big Bang Theory Season 1, Episode 3
Although,
BASED on your story,
The Big Bang Theory Season 7, Episode 18
Although, BASED on the floor
of your bedroom,
The Big Bang Theory Season 7, Episode 1
was BASED on our
guidance system.
The Big Bang Theory Season 11, Episode 8