they must learn the rest in different way somehow if they really interested ,
as you cannot force someone if they say not interested right?
just explain with a good simple sentence and show them something attractive like lure them with your good profit etc.
Yes if they take initiative on their own then it can make things easier, its our responsibility to introduce them to bitcoins and rest should be kept in their hands, they will go for it if they find it useful.
You are right, as long we do our part on telling them about bitcoin then its up to their initiative on how they would maximize or do their part. Telling to someone about bitcoin should need a good approach and a precise explanation for that you would have an effective illustration about on usefulness about bitcoin and all other things related into it.