How Jeans Are made

This article/video, reported on Craftzine shows how jeans are made.  WOW!  It takes them under 13 minutes to sew a pair of jeans!  It takes me way longer, but it is very satisfying.  I love the look people give me when I say I made my own.  Have you sewn jeans?  The pattern I use is Butterick 6437.  I have sewn jeans using this pattern using white denim, blue, chambray, cotton print, linen, etc.