[nojito]

Because the opposite of black box is clear box so it makes sense to use the opposite of clear which is opaque.

[mbeex]

> Because the opposite of black box is clear box

Not a native speaker (never heard "clear box" as terminus technicus), but a mathematician: If it is "the (only) opposite", the relation ist symmetric. So the opposite of "clear box" is "black box" again. Skipping the injective part, "black box" would be still one possible opposite.

[nojito]

it's also known as open box or glass box and very rarely white box.

[mbeex]

> very rarely white box.

I would not consider the attribute "rare" to be appropriate here.

For example: I regularly deal with adversarial networks, and both black- and white-box attacks are quite common there.

[mikevm]

No, it makes no sense to change a well-known phrase to an unfamiliar and goofy sounding one just to appease a silly ideology that injects racism into everything.

[nojito]

It has nothing to do with racism, but good on you for bringing racism into the argument though.

Black box vs clear/open box are very well known terms. Some people use the term opaque box instead because it a more clear antonym to clear/open box.

[mikevm]

> It has nothing to do with racism, but good on you for bringing racism into the argument though.

Nonsense. This is all part of the "oppressive language" concept peddled by the neo-Marxist authoritarian types.

> Some people use the term opaque box instead because it a more clear antonym to clear/open box.

This is the first time in my life that I head the term "opaque box" used instead of "black box" in this context. I couldn't even find this phrase using a Google search.