Punctuated Equilibrium Theory – a pet peeve about graphics

So there are lovely images of Advocacy Coalition Framework

and Multiple Streams Approach (Basic version

and with more recent modifications

But none that I have found for Punctuated Equilibrium.  Someone who knows what they are doing should do something about that gap.  Meanwhile, this.

Comments very welcome (rude is fine – I dish it out, and for the most part, I can take it).