"Common sense is not so common" according to Voltaire and this is a problem that has been around for many, many years (I am still partially blaming TOWIE et al). When reading instruction manuals obvious things will be explicitly explained to adult people to stop them microwaving live animals or immersing electrical items in water or fire (!?). Mind blown.

There is an old proverb 'A handful of common sense is worth a bushel of learning' and you'll see this frequently in a business environment where super educated people will have no concept of the real world. An MBA does not guarantee common sense. 

So why is common sense so rare? What could we do to ensure we are teaching/developing this rare skill so the impact of it's scarceness isn't felt quite as hard in a work environment?