[ALPAPilot]

You cannot suspend basic physics, go on to construct some "what if?" scenario, and then claim it's still covered by physics.

Then you best burn most physics textbooks and rid the world of such things as frictionless pulleys, massless ropes connecting point masses, frictionless surfaces, continuous mass distributions etc.

[Moltke]

Simplification (e.g., a point mass) to enable mathematical description is not the same as ‘magic’ as used in the article. JMHO.