That's why I meant that we are probably already in the slope and not before it.
But we can't forget that as it goes up, it easily stagnates as well.
Especially AI, AI is stagnating for a long time already. The AI we are building at the moment are the same we're building for a while just with more processing power.

Similarly, quantum computers might be ready for commercial shipping relatively soon already, but until we understood for what they're good a long time might pass still.

And, the more the society becomes resistant to change, they can slow this down strongly and might bring us to a more modern type of "medieval area" similar to the technological expansion we saw in the antique which was then stopped for a long time by religion.