INFINITE MONKEY THEOREM:

The infinite monkey theorem states that a monkey 
hitting keys at random on a typewriter keyboard 
for an infinite amount of time 
will almost surely type the full source code 
of any given protocol, such as Ethereum. 
However, the probability that Ethereum devs 
filling the entire observable universe 
would type a single secure smart contract 
is so tiny that the chance of it occurring 
during a period of time hundreds of thousands 
of orders of magnitude longer 
than the age of the universe 
is extremely low (but technically not zero).

The theorem can be generalized 
to state that any sequence of events 
which has a non-zero probability of happening 
will almost certainly eventually occur, 
given enough time.