But the humans don't know yet that these aliens are around.

Most of what humans know about the way narrative works they learn as children.

Those humans know what they're talking about, and their tactics have never failed.

The humans hadn't really known what to do about him.

If humans did not know what to do, it would be too much to expect of a machine.

Or the old humans wouldn't have known to put it on the wall.

Because you are human, and humans know the original language.

For all any of us humans know, they might actually enjoy it.

So, though humans now knew nothing of things mechanical, once again human hands had to fly her.

He is trying to let all the humans know the truth - that they are living inside the Matrix.