Clearer alpha-beta cut conditions

[cgosorio]

In aima4e-algorithms.pdf, in the pseudocode for Alpha-Beta-Search, the conditions for stopping the search in Max-Value and Min-Value are:

• if v >= beta then return v, move
• if v <= alpha then return v, move

There is nothing wrong with that, but I think it would be easier to understand using the conditions:

• if alpha >= beta then return v, move
• if beta <= alpha then return v, move

Unless, there is some subtlety that I am not seeing that makes these conditions different.