Examples:
(1)Fixing a car is a challenge.
(2)Fixing cars is a challenge.
(3)Learning a language is hard.
(4)Learning languages is hard.
How I understand the examples:
(1) and (3) are called "Indefinite Generic", and (2) and (4) are called "Plural Generic", I believe.
I think Indefinite Generic and Plural Generic are used for talking about something in a general tone.
Questions:
Question 1:
Do examples (1) and (3) imply the meaning that fixing "just one car" or learning "just one language" is a challenge or is hard and put little emphasis to cases where there are more than one car or one language?
In other words, do they imply the meaning: "Fixing just one car or learning just one language is hard, but if there are many, I am not sure."?
Does it depend on the context?
Question 2:
Do examples (2) and (4) imply the meaning that fixing "more than one car" or learning "more than one language" is a challenge or is hard and put little emphasis to cases where only one car or one language is there for fix or learning?
In other words, do they imply the meaning: "Fixing more than one car or learning more than one language is hard, but if there is only one, I am not sure."?
Does it depend on the context?