The era preceding the symbiotic age is generally known as the pre-computer age.

The symbiotic age began with the advent of the computer.

This means that the conditions necessary in a symbiotic age are now ceasing to exist.

Historical development is going further, and the symbiotic age-likeall other ages-hasproduced the conditions required for the next.

Despite all the dramatic events of the symbiotic age, evolution on the whole has moved steadily in one direction.

The mathematically cogent proof of this theorem is one of the finest scientific achievements of the early symbiotic age.