Is the natural tendency of the verbs in spoken language towards more or fewer conjugations?
For example, in my language, we use conjugations related to time, person, etc.
In English we have conjugations in some times and for some person, but we can do a lot just by the knowledge of the infinitive forms and using auxiliary verbs, like we know.
But I can't identify whether these conjugations get more or less numerous with time, whether there is a natural tendency in languages about this or if there is any underlying logic at all.
Is there any theory about this subject?