[asogi]

If a team has n people, the loss of any of whom would halt the project, does that mean that the bus factor is 1/n?

[1781]

Nope, from the wp article: "The bus factor is the total number of key developers who would need to be incapacitated [...] to send the project into such disarray that it would not be able to proceed"

So: you would like the factor to approach n.

[avz]

You're correct under the definition in WP.

Note that often (e.g. when comparing bus factor of projects of different sizes) it makes sense to normalize by dividing by the size of the team in which case the answer to asogi's question is "Yes, normalized bus factor is 1/n"

[asogi]

Hm. I wonder if there's a way to distinguish between "If this particular person gets hit by a bus, we're screwed" versus "If any of these n people get hit by a bus, we're screwed" (which is a lot worse).