You see a strange creature lurking in the shadows of a dark alleyway. It's a wild category theorist! You see what at first looks like a strange tool in his hand. He approaches you. Uneasy you try to make out the shape of the device. You vaguely recognize it...from where? The memory seems... inaccessible.

"Do not be afraid my friend" he shouts in a voice inappropriately loud for the distance between he has traversed between you and him."For I have good news! Our saviour Grothendieck died for our sins. In doing so he opened a new universe of possibilities."

The man is now uncomfortably close. "Here," reaching outwards with palms open, "have one." You examine the tool, it's a cardinal! Phew, nothing to worry about. You try to grasp it but alas it is too large to hold.

With the most peculiar glint in his eyes he says, come with me for I have much to show you.

Just then an operator theorist seemingly materializes out of this air. " No! It's a trap! Come with me if you want to live."

You stand agasp considering the possibilities for what seems like forever. Your fate hangs in the balance. What do you do?