It is especially obvious given that the goal is to lower the boundary from 70e6 to 3. There are i such that |prime[i] - prime[i+1]| >= 3 but it doesn't prevent

It is especially obvious given that the goal is to lower the boundary from 70e6 to 3. There are i such that |prime[i] - prime[i+1]| >= 3 but it doesn't prevent the possibility that there are infinite number of pairs such that |p - q| < 3 where p, q are primes.