Weapons for a special-operations ship

[AnotherDilbert]

Well I'm not saying there's only 1 right way to do it. The context is important.

Quite, the same words means different things in different fields.

The difference lies in the meaning humans assign to the values, and not the algorithms. The code for (a1, a2) + (b1, b2) = (a1 + b1, a2 + b2) is the same if we have co-ordinate translation vectors, or if a is a list (programmer's vector) of prices and b is discounts per item.

Certainly, but M₁₃ × M₁₃ is not the same as V₃ × V₃ is not the same as V₃ · V₃. It's easier to adapt to changing requirements if we choose the right tool from the start.