I find it quite strange that true title of this video is “Everything you ever needed to know about sergers”, and yet you barely mentioned 50% of the category. You rambled on and on about “Overlockers” (although you didn’t use that word even once) but barely touched on the other type of serger… the “cover stitch machine”. You can’t cover only 50% of of a type of sewing machine category, and basically ignore the other 50% and call it “everything you need to know about…”. It’s the same is titling, a video “everything you need to know about the human race” and then only discussing females. You’ve missed the whole other category.