Re: git-rev-list: "--bisect" flag

> 1. count all visible nodes [ i.e. nodes that git-rev-list would print
> ], call this value N
> 2. at the top node inject N units of mass
> 3. traverse the visible graph, in topological order
> 4. at each node, send all the mass received from parents minus 1 unit
> onto visible parents. Record how much mass you have sent downstream.
> Keep a record of the nodes that have seen nearest to half of that
> mass.