The Dark Matter Flowchart

This flowchart was designed, around 1986, by a group of Princeton graduate students who have now gone on to (arguably) greater glory elsewhere. Thanks to Drs Todd, Tom, Barbara and David.

When this flowchart was written, it was known that Omega=1, Lambda=0, and H0=50. Now it is known (with the same high confidence by the same perpetrators) that Omega=0.27, Lambda=0.73, and H0=72. The situation described by the flowchart has changed rather less in that time.