Kavka's toxin puzzle
I love a good thought experiment before bedtime. Via dailymeh:
An eccentric billionaire offers you a million dollars if at midnight tonight you intend to drink a vial of poison tomorrow afternoon. You are free to change your mind after midnight and not take the poison; you will receive the money whether you take the poison or not, so long as you at midnight sincerely intend to take it. Knowing all this, can you get the money, yet also avoid the poison?