The dogma generally becomes accepted because it outperforms other known strategies. In a game like Go, that could previously take a while because there are so many possible follow-ups that it takes time to accumulate enough data on whether a new strategy is actually decisively better, or just worse but over-performing because it's less known.
There's a big difference between those two and "the hacker ethos" will lead to a lot of the latter. However, now computers can simulate enough games to give a relatively high degree of confidence that a variation in strategy is truly better.
There's a big difference between those two and "the hacker ethos" will lead to a lot of the latter. However, now computers can simulate enough games to give a relatively high degree of confidence that a variation in strategy is truly better.