Quote:
Originally Posted by tASSy
similar to a roulette wheel, the statistics for whether you land on red or black don't go up exponentially each time you play, nor each time you have sex. you can also liken this to flipping a coin; just because you flip the coin a thousand times doesn't mean the probability of the coin landing on either heads or tales increases. it is a YES/NO, just as is a BROKEN CONDOM/EFFECTIVE CONDOM.  |
In the analogy to coin flipping, the odds of getting AT LEAST one head go up when you flip multiple times.
1 flip. 50% chance of getting at least one head.
2 flips. 75% chance of getting at least one head (1-1/2^2)
3 flips. 87.5% chance of getting at least one head (1-1/2^3)
This is like the chance of getting pregnant. Forget the condom for a moment. Say you have a 1 in 20 chance of getting pregnant each time you have sex.
After 1 time. 5% chance of being pregnant
After 2 times. 9.75% chance of being pregnant
After 3 times. 14.3%
After 20 times. 64.2%
NOT:
After 1 time. 5% chance of being pregnant
After 2 times. 5% chance of being pregnant
After 3 times. 5%
After 20 times. 5%
(if that were true there wouldn't be many kids! Only 1 in 20 people could have kids. More sex = more kids!)