That first visualization using d3 is a classic example of a bad visualization isn't it? It's extremely difficult to get a sense of the difference in off-diagona

That first visualization using d3 is a classic example of a bad visualization isn't it? It's extremely difficult to get a sense of the difference in off-diagonal transition rates, and impossible to get an accurate sense of them or any sense at all of the on-diagonals. And yet, the transition rates could have been conveyed perfectly well by writing them in a 10 by 10 table! Maybe shading the cells of the table somehow to show the rate -- I'm no expert in data visualization -- just not the one chosen! I think d3 is wonderful, but I worry that this sort of thing will make some people shake their heads and say "fancy JavaScript nonsense just causes people to make bad visualizations nowadays".