Ken Larsen's Backgammon - AVOID6 tactic
Avoid making points 6 points apart. They can't be part of the same prime. Mike Corbett calls them "superfluous".
· 6/5(2), 3/2(2) is 0.025 worse
See the HITPOINT tactic. That shows an example where making points six pips apart is recommended [because you’re hitting a blot].