Absence of Friday

Alison the coworker: good morning...it's Thursday!

Kelli: you know that theory that says there is no cold, only the absence of heat...and there is no dark, only the absence of light?

Alison: ::confused:: Um, yeah...there is no white, only the absence of color...

Kelli: right!

Alison: ::even more confused:: Okaaaaaay...

Kelli: Thursday is not a real day...it's only the absence of Friday.

Alison: so it's not like a real day...

Kelli: only the absence of Friday, yes. It's defined by not being Friday.

Alison: Interesting...

Kelli: the workweek is only the absence of the weekend.

Alison: so the workweek isn't real at all...

Kelli: Exactly.

Alison: You need to drink less coffee.