This argument can work both ways. Some people claim everything in Egypt could be done with hands, patience (or by forcing someone). But there are many other clues, suggesting that civilization had access to some very sophisticated tools or machinery. Maybe not lasers, but not hand saws either. Check this short clip for example: https://www.youtube.com/watch?v=0Oe1--ss51Q&t=917s It describes a sarcophagus was ditched mid-production, because the cut was made in the wrong way. I am not saying that the conclusion is valid, but it's an interesting data point.