#2867: DateTime explain

[Ponytail is talking to Cueball.]

Ponytail: Event #1 happened at time T1.

Cueball: Okay.

Ponytail: Then event #2 happened at time T2.

Cueball: Mhmm.

Ponytail: How would you calculate how much time elapsed between T1 and T2?

[The comic splits into two paths, each with a caption at the top.]

[Path 1, upper right panel]

Caption: Normal person:

Cueball: T2 minus T1.

[Path 2, lower right panel]

Caption: Anyone who’s worked on datetime systems:

[Cueball has his arms raised.]

Cueball: It is impossible to know and a sin to ask!