Marketing Mini Experiments

It is so tempting to spend money on Facebook adverts or Google adverts: the promised land of an advert that brings in customers and builds your business whilst you sleep. Countless adverts pop up in your timeline offering you these services: "Pay us and we will manage your adverts for you!" "Come on this course and we will teach you the 'secrets' of Facebook advertising!" Is it time to go all in? Or is it time to run a marketing mini experiment?