What is Pachira? (Sorry if I'm missing something obvious.)
Edit: OH In Bluepaper!
It's not the easiest to explain but it's an algorithm used in Proof-of-Growth to fairly distribute rewards. Here is a link that goes into the details - careful - it's heavy:
http://ccr.sigcomm.org/online/files/fp231-douceur.pdfWow - that is pretty heavy. So, PoG uses some research created by Microsoft to solve fair lottery distribution for growth mining. Quite interesting.
Does the core team have ties to Microsoft's Blockchain team?