Early Stages of Stellar Evolution and Masers

A mighty stream of tendency.

Pouter, tumbler, and fantail are from the same source;
The racer and hack may be traced to one Horse;
So men were developed from monkeys of course,
Which nobody can deny.

Even in her transfigured state, the thought of goal-oriented evolution gave Evelyn the creeps. It smacked of Intelligent Design, the ludicrous evangelism of engineers masquerading as biologists, their PowerPoint presentations riddled with evasions and half-truths and pseudoscience. Such thinking confused causes and effects; it complicated unnecessarily the idea of evolution, a field where explanations are valuable only for their parsimony.