This reminds me of the IBM RANDU PRNG on which I gave an undergrad presentation (w/ visualization). RANDU was legendarily bad; all you had to do was plot triple

This reminds me of the IBM RANDU PRNG on which I gave an undergrad presentation (w/ visualization). RANDU was legendarily bad; all you had to do was plot triples in a 3-D volume to see that all of the generated points would fall within one of 15 (Edit: 15, not 11) planes.