Paul was answering questions in Podcast 026. He kept saying it depends (this is the standard answer for Software Engineers per my SW Engineering Instructor in College) when asked what the questioner should plant at their house

I propose a web app/mobile app.

Backend DB would have the plants/trees/bushes/herbs categorized by Permaculture categories (I have not taken a PDC) so my knowledge is limited on this but I have heard you and Jack Spirko mention herbacious, dynamic accumulator etc. Plus they could enter the results of their soil test to help them get a better list. It would also tell them what Permacultre Zone/Sector the plant/tree etc would be best suited for.

Something that would require less input from the user versus what I see at Plants for a Future website. A lot of those questions would be answered when the user entered their zip code. This would be a great tool and keep Paul from having to say "It Depends".

If this is idea is already out there then great! Sorry for being late to the party.