I saw a Huberman clip this morning where he said that because women under thirty have a 20% chance of getting pregnant after a single attempt that they should t

I saw a Huberman clip this morning where he said that because women under thirty have a 20% chance of getting pregnant after a single attempt that they should try five times before seeing an OBGYN because 20% x 5 = 100% and that six times would be 120% but "that's something totally different". It blows my mind that a Professor at Stanford could have such a terrible understanding of statistics.