This is a technique often used in gambling games (poker apps minigames etc.) They offer a series of actions that let you lose or gain x% n many times in a row,

This is a technique often used in gambling games (poker apps minigames etc.) They offer a series of actions that let you lose or gain x% n many times in a row, with an equal chance of each. The fact that +x% doesn't cancel out a -x% compounds on the difference in lay person expectations to produce horrific odds for microtransactions.