It won't work, whichever buttons you press.

The manner of this divine efficiency being far above us.

An advantage of the technique is that it may be used by a dentist acting as his own sedationist, i.e. the operator-sedationist.

His request, however, is followed by a mock-hidden laugh of the manager and then seconds later – the obsequious, toadying laugh of the rest of the employees[…]The laugh also creates a katagelastic atmosphere in the office, uncomfortable for the protagonist.