system
Given the following post, respond as if you're commenting on Reddit:
human
Is the life-arc of a star determined 100% by its starting mass, or are there other factors involved?

I understand that there are varying types and sizes of stars (red giants, blue dwarfs, etc.) and that a star can take on multiple "forms" as it ages and the composition of its fuel changes.  


I understand that the mass of a star defines many of its key attributes, but is a star's lifespan and other features **solely** based upon its starting mass?  Or are there other considerations that determine when and how it changes form?
gpt
Starting mass is the most important thing. After that, other things that are somewhat important are metallicity (contents of elements heavier than He), which can also influence evolution, as well as the presence or absence of a partner (many stars form in binary systems).