The speaker is uncertain about the historical evidence for a major growth jump, noting that records from before the Industrial Revolution may be poor and that he has no strong opinion.

“I'm a little bit suspicious and I would have to take a look. For example, like maybe some of the logs are not very good from before the Industrial Revolution or something like that.”

“So I'm a little bit suspicious of it, but yeah, maybe you're right. I don't have strong opinions.”