Funny thing is this starts in 1000 BC. What happened in 1177 BC? The Late Bronze Age Collapse. A similar reset.

Calling this a "hole," is narrative device that discounts the repeated resets. It would be better to call this the Christian reset.

"Scientific advancement" is also somewhat arbitrary.

This is a revision hip arthroplasty with complete femoral replacement, a highly complex orthopedic surgery.