“Konstantin, carry it (Es) in.” So much for choosing a name. Originally it should have stood straight. However, as is so common in life, it ultimately gets its real character from a quirk of fate. That’s what makes Es so special. There have been some complaints that Es doesn’t wobble enough.
But of course, we don’t leave everything up to fate. Precise tolerances determine the right relation between too much and too little wobbling.