The 'Bannister effect' suggests that once an achievement is proven possible, others are more likely to replicate it, as seen with the four-minute mile.

“the best example of this comes from another sort of sporting case uh I don't if you know the case of Roger banister who's the first guy to run the for minute mile break the four break the 4 minute mile um and before he did that people thought it was like physiologically impossible like the human body cannot do this and he was like no if human body can do this everyone was like Roger you're crazy whatever but then he you know trained and trained and probably to overcome his obstacles he ran it and then within like two months somebody else broke the 4minute mile like it had not been broken in all of human history but as soon as people had evidence of like oh people can do that like now everybody does it”