Why is kernel_task slowing my Mac down so much?

This is a nothing article.

The article provides no meaningful analysis. Here’s what might have made it worth reading:

* How does the hardware, and software like the kernel, manage heat in the machine?

* Some information about CPU power states, &c, and how the kernel interacts with the hardware regarding them.

* Some analysis of how Activity Monitor works and why it ascribes a certain amount of CPU activity to kernel_task, or to any other task.