I and We still indicate number, and I think that is all.
Thou and You also indicated number, but also social status. If someone was your social superior you addressed them as You, but an inferior was addressed as Thou. Thou mostly dropped out of use when the concept of the equality of man became common and it was no longer acceptable to keep men down.
He, She and They are in a similar position now to where Thou and You were 400 years ago. Just as the equality of man changed pronoun usage back then, so the equality of women with men is beginning to have the same effects now.
no subject
I and We still indicate number, and I think that is all.
Thou and You also indicated number, but also social status. If someone was your social superior you addressed them as You, but an inferior was addressed as Thou. Thou mostly dropped out of use when the concept of the equality of man became common and it was no longer acceptable to keep men down.
He, She and They are in a similar position now to where Thou and You were 400 years ago. Just as the equality of man changed pronoun usage back then, so the equality of women with men is beginning to have the same effects now.