you have 8 pills. One pill is poisonous. the poisonous pill looks exactly like the other pills but it weighs slightly more than the others. you have a balance scale, but you only have 2 chances to use it. How are you going to be sure that you find out which pill is poisonous?
split the pills up in 2 groups of 4. whichever side weighs more, split them up in twos. whichever weighs more of the twos, take those two and you have a 50/50 chance of picking the wrong one.
put 4 pills on each side
the heavier side gets measured again
split the pills in two groups of two
measure again after putting them on
which ever one is the heaviest side ignore those 2
*don't mess with them* lol pills are bad in more than just one way tehe