Most humans do not enter higher delta bands through training first. They brush against them through stress, danger, concentration, or extreme emotional load.
That fact is one reason delta language remains difficult to standardize. Institutions prefer conditions that can be measured in clean laboratories or controlled travel programs. Ordinary life produces timing excursions that are shorter, dirtier, and more subjective, even when they are operationally real.
The practical consequence is that most people know higher-delta experience only as a flash. A crisis stretches. A decision window thickens. A few seconds seem to hold more internal motion than their clock value should allow. Those experiences are not enough to build a stable timing discipline, but they are enough to make the larger framework plausible.
This is also why most timing governance begins with restraint. Natural high-delta touches are common enough to acknowledge and unstable enough not to romanticize. The system becomes dangerous when short-lived human experience is mistaken for safe sustained capacity.