[immibis]

It's all pedantry. Physics makes a distinction between mass, a (mostly) invariant property of an object, and weight, the force proportional to your mass and the planet you're standing on divided by the square of the radius. Only physicists care about this distinction.

[USiBqidmOOkAqRb]

I would like to believe engineers care too. A simple action like standing up or being on a bus that's taking a curve will make items on your person weigh more.