When we're talking about industrial revolution type of stuff, there is a whole train of dependencies that I suspect would have been difficult to speed up a lot. Maybe if the Roman Empire hadn't collapsed though you could make arguments both ways given the Roman Empire as a slave society didn't necessarily need a lot of labor saving devices.

The genuine innovations that mostly just needed ideas and the will to put them into practice were probably more in realms like health/medicine. Even a lot of science, your hypothetical time traveler might have been "right" but in many cases would have no way to prove it.