To adjust so that others do not over expect too much. The common expression “expectation control” has little to do with the mathematical concept of “expected value.” It refers to “Controlling Expectations.”
This page is auto-translated from /nishio/期待値コントロール using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I’m very happy to spread my thought to non-Japanese readers.