Question: A photojournalist entered a dangerous cave to take some pictures. Suddenly the cave starting shaking. The journalist had to run out but forgot which way he got inside. There are 4 tunnels leading him outside. Tunnel 1: Poisonous bats that will kill you immediately. Tunnel 2: Heat from underground that will burn anyone. Tunnel 3: Toxic gas that will kill any kind of animal. Tunnel 4: Radioactive plants that will destroy you in one touch. Which way is safe?
Answer: Tunnel 3. The gas kills any kind of animal, but you're a human.
Question: Your father is a scientist who has invented a red pill which, if eaten with 1 blue pill which he has invented, will grant immortality. The night he invents it, he gives you 2 red and 2 blue pills just in case one of them is lost or substandard. He also warns you that an overdose will cause the opposite effect and kill you instead. You put the pills in your pocket and leave his lab for home. On the way home, you are abducted by aliens who blindfold you and throw you into a singularity. At this point, you remember the pills your father gave you. You take them out (you can move and have enough oxygen in space for a short time), but realize that you can't tell the red pill from the blue pill. Even if you take off your blindfold, you can't see anything due to your proximity to the black hole. Given the circumstances, how do you successfully eat 1 red and 1 blue pill and survive?
Answer: Eat half of each pill.