Determining the difference between Bockings 4 and 14 is done by consensus. It's like trying to identify the difference between twins.
"There are other spots on the web to get my fix proving someone is an idiot but no other place for what I get here." -- former permie Brice Moss, 2012.
I use this cartoon in a presentation that I've done on gardening where I emphasize learning to live with and utilize weeds. I tell folks to remember this cartoon when they're attempting to have "clean" gardens so they realize how ridiculous that notion really is.