philosophy-2
Explanation
The Joke
Four characters each apply a different philosophical or intellectual framework to a mundane situation. First, a "man of philosophy" invokes consequentialism, arguing that since the long-run effects of our actions are unknowable, we cannot make moral judgments about choices -- leaving him unable to decide on anything. Second, a "man of science" invokes the vastness of the universe, noting that from a cosmic perspective, nothing humans do matters, since in billions of years the sun will consume the Earth. Third, a "man of logic" uses strict deductive reasoning to note that since he does not know all possible options, he cannot logically conclude which is best.
The punchline comes in the final panel: after all three have used their grand intellectual frameworks to arrive at paralysis, a fourth person just says, "Or I'm just trying to calculate your pizza tip," and another character delivers the kicker: "Long story short, your tip was less than five percent." All three of these elaborate philosophical justifications were just excuses to avoid leaving a decent tip on a pizza.
The Humor
The comic satirizes a common tendency among intellectually-oriented people: using sophisticated reasoning frameworks to rationalize simple selfishness. Consequentialism, cosmic nihilism, and formal logic are all legitimate fields, but here they are weaponized to justify being cheap. The gap between the grandeur of the reasoning ("the sun will engulf this solar system") and the pettiness of the goal (not tipping the pizza delivery person) is where the comedy lives. It is a classic SMBC move -- taking real intellectual positions and showing how they can be absurdly misapplied to everyday life.