Why did older languages in general have more complicated, multisyllabic words, when most other things increase in complexity as they develop further?

Question

Doesn’t it make sense to start with simple noises to represent the everyday things?

In: Other

Answer 1

It could be because we live in a fast paced world and we strive to save time and don’t enjoy things at leisure and look for short cuts. Also comparatively we have more things to do than before hence easier life style changes.