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> To simplify how things work, there are two sets of systems in the plane.

If the plane was not simplified, how many systems would there be? It seems to me that the goal is not simplicity, but automation and safety. Otherwise, there would still be flight engineers.

> This includes the anti-skid functionality.

Fly-by-wire includes anti-skid? Direct law includes anti-skid? What is 'this' referring to?

> If they all fail, the plane reverts to a known, extremely well tested, working systems.

Well tested compared to what? Well tested compared to flying with flight computers?

> Adding another failure mode is a bad idea.

Why is the anti-skid toggle a physical switch if it is only available in some systems of laws? It's physical presence means pilots will think it is always available. Isn't a misunderstanding a failure mode in itself?