A hand made rug can consist of 25 to over 2000 knots per square inch. A skillful weaver with years of experience is able to tie a knot (a woolen rug) in about three seconds, meaning 20 knots per minute.
That means it would take the weaver 2520 hours to weave a 7×10-foot rug with a density of 300 knots per square inch. If we divide this number by 8-hour working days that means it would take one weaver 315 days (one full working year) to weave such a rug.
The weave however is just half the work to be done on a rug. Imagine if the knot density is even higher!