I'm not sure if my brain is failing me but... "I calculated a less than 0.001% chance of posts (content) making the front page of Reddit. That is a 1/1000 chanc

I'm not sure if my brain is failing me but... "I calculated a less than 0.001% chance of posts (content) making the front page of Reddit. That is a 1/1000 chance." Surely 1% is a 1 in 100 chance, 0.1% is a 1 in 1,000 chance, 0.001% would be 1 in 100,000 chance. Have I made a critical error here?