@tomcat@clarkgoble In Dotcom crash Nasdaq Composite lost 78% of its value. THAT is a crash, and that's what I'd predicted. What we have is a correction. If stays like this China will once again have confounded me :-).
@clarkgoble The WSJ link was Opinion section; WSJ opinion was very low reliability even before Murdoch. The Journal-Sentinel article says Archer was axed by Walker's team, which is odd for "victim" of left wing harassment.
@johngordon My favorite analog computation example is using a peg board and sudsy water to compute minimal spanning tree on the graph. Dip the pegs in, lift the board out, and the bubble pattern traces MST. Random lesson plan for this. [superm.math.hawaii.edu]