"*Please don't post shallow dismissals, especially of other people's work. A goo...

"Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something."

There are also additional guidelines for Show HN threads:

Be respectful. Anyone sharing work is making a contribution, however modest.

Ask questions out of curiosity. Don't cross-examine.

Instead of "you're doing it wrong", suggest alternatives. When someone is learning, help them learn more.

When something isn't good, you needn't pretend that it is, but don't be gratuitously negative.