Board Thread:General Discussion/@comment-32182236-20190716003715/@comment-36453001-20190717123214

Ask why, I called it back logic or shrink, it is a logic in a back direction.

Ask not why, I called it forward logic or expand, it is a logic in a forward direction.

If I ask how when analysing mechanics, I see products or practical experiment in life.

If I ask why when analysing mechanics, I get quantam mechanics.

If I ask how when analysing quantam mechanics, I get mechanics.

If I ask why when analysing quantum mechanics, I realize the truth.