Books 
Position 77a, page 146
From Backgammon for Blood, by Bruce Becker
From Backgammon for Blood, by Bruce Becker

Should Black double to 2? 
If my opponent has a 2 and 5 position and throws the cube at me, do I take? Well, I do if it is exactly a 2 and 5 position that he has, and also if my position is at least 2 and 5 as well. The reason is this: although he has better than a 5– chance of winning, there is still the factor of 3 to 1 odds working for me. So, although there are nineteen ways out of thirtysix for me to lose one dollar, there are seventeen ways out of thirtysix for me to stay alive and then have at least a 50–50 chance to win three. Therefore, the odds paradoxically are with me to accept.
Rollout
Tom Keith 2013 

Money play Centered cube Black on roll 1296 games with VR Checker play: 3ply Cube play: XG Roller 
XGID=AAaa:0:0:1:00:0:0:0:0
Cube Action  Game  G  BG  Equity  
No double 
W L 
.7493 .2507 
.0000 .0000 
.0000 .0000  +0.4753  (0.4753)  
Double  Take 
W L 
.7493 .2507 
.0000 .0000 
.0000 .0000  +0.9506  +0.9506  
Drop  +1.0000 
Black should double and White should take

