Ockham's Razor

[Piers]

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F=ma?

I think you're forgetting the need for empirical adequacy, which any Occam's Razor pretty much assumes.

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Am I?

F=ma, A useful approximation or absolute truth?

What’s force, what’s mass what’s acceleration? To define the mass of an object we put a boundary round it, is this how things really work?

Empirical adequacy not empirical accuracy good maybe you agree with me? F=ma is certainly adequate for most uses.