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The next day, people usually don't feel like it.
2 How many people will actually be willing and able to comment on the game, for example, like Alex?.....

Added 1 minute ago


The quality of the game will actually suffer; there won't be time to think while talking.

On the contrary. By verbalizing his actions, a person will be able to understand them more clearly. Chatting is not necessary. Just think out loud. Those who have been playing Heroes for a long time will comment, and most of their actions will already be automated, so it is unlikely that their own speech will lead them to a dead end. Moreover, with each time, they will develop the skill of commenting on the game.