Now, first, what can you deduce from this sign?
ANSWER (highlight to the right of this to see): The floor is frequently slippery.
If you got it right, congratulations on your skills of deduction. I guess if you can’t make that deduction, you deserve to fall on the floor. 🙂
Also, from the graphic, it seems like the sign is actually warning you that the floor frequently contains Portals. 😉
PS – This is a joke, not a real test. If you got here by googling…this probably wasn’t what you were looking for. 🙂