@futurebird Oh, I remember how in 6th grade in Chemistry class the teacher simply started writing on the blackboard the headline "The Mole"
And me, being a tidy student with a nice handwriting and a neat exercise book, decided that I won't use abbreviations and instead wrote the headline "The Molecule".
It took half the lesson for me to realise that he had introduced a comletely new concept and was teaching us about Avogadro's number and stuff. 