The classic trolley problem is a thought experiment in ethics about a fictional scenario in which an onlooker has the choice to save 5 people in danger of being hit by a trolley, by diverting the trolley to kill just 1 person. The term is often used more loosely with regard to any choice that seemingly has a trade-off between what is good and what sacrifices are “acceptable,” if at all.

The internet has of course come up with it’s own, more complex versions of the trolley problem and we’ve collected some of the best. These trolley problem thought experiments will break your brain:

Prisoner’s Trolley Problem:

Wolverine Trolley Problem:

Company Trolley Problem:

Grandfather Trolley Problem:

Monty Trolley Problem:

Hundred Dollar Trolley Problem:

Ship of Theseus Trolley Problem:

Teleportation Trolley Problem:

Murder Trolley Problem:

Gambler’s Trolley Problem:

Torture Trolley Problem:

Capitalism Trolley Problem:

Wholesome Trolley Problem:

Source: Imgur

Let us know how you would react to these trolley problems in the comments below!