The phenomenon that something which was previously working correctly, suddenly does not work correctly when one tries to demonstrate the operation to others.
"The inventor Zuse was occasionally helped by this good fortune when, contrary to expectations, devices ran without any errors during important demonstrations, and he freely admits that this "inverse forefaran effect" has often helped him." (Der Computer — Mein Lebenswerk, by Springer-Verlag)
by danachos July 20, 2023