I have this sentence that intoduce a list of items:
Encountering a succession of person to observe how each one's way of thinking affects:
● his/her way to look at the world
● his ...
● his ...
I'm tempted to use "their" (as it is recommended in several post), but I do need to keep a clear individual focus, and thus to keep the "each one's". "Their way to look" should not be interpreted in a collective sense ("several people's ways to look" would ruin the meaning)
I want to say that "the way of thinking of a single person influences the way to look at the world of that particular person". (meaning 1)
I don't want to say: "the way of thinking of a single person encoutered influences* the way to look at the world* of all the person encountered". (meaning 2)
Using their seems to imply meaning 1 as well as the 2, while using his/her will clearly imply meaning 1 without risking any confusion with meaning 2.
Knowing that context, should I use "each one" with a list of items started with "their" or should I write "his/her way to look a the world" (and then keep only the his for the other items)?