Ponieważ nie znają się na nowoczesności tak jak my
I think that use computers for older people is more difficult than for us. Computer is an invention which appeared not long ago. People in the past couldn't use it, because they didn't know how. Nowadays computers are used by younger people than older.

takie trochę masło maślane, ale może się przyda.
Older person is more difficult to learn something new and younger absorb things faster, of counrse, not all adults have a problem with that because some have the year the write as well as not one of the teenagers who uses a computer every day