In every branch of industry the less efficient are crowded out.

Being crowded out because of inefficiency, they cannot go up, but must descend, and continue to descend, until they reach their proper level, a place in the industrial fabric where they are efficient.
It follows, therefore, and it is inexorable, that the least efficient must descend to the very bottom, which is the shambles wherein they perish miserably.
A glance at the confirmed inefficients at the bottom demonstrates that they are, as a rule, mental, physical, and moral wrecks.

The exceptions to the rule are the late arrivals, who are merely very inefficient, and upon whom the wrecking process is just beginning to operate.

All the forces here, it must be remembered, are destructive.

The good body (which is there because its brain is not quick and capable) is speedily wrenched and twisted out of shape; the clean mind (which is there because of its weak body) is speedily fouled and contaminated.
The mortality is excessive, but, even then, they die far too lingering deaths.
Here, then, we have the construction of the Abyss and the shambles.
Throughout the whole industrial fabric a constant elimination is going on.