Gig 601XL Builder writes:

I tried to lift 400 lbs. and couldn't do it. I can now pretty safely say I
can't lift 500 lbs.

If you had been unable to taxi on two engines, it would be reasonable
to assume that you could not taxi on one. But that's not the case
here, and so that analogy (the only one that matches yours) is
irrelevant.

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