I do not believe that HG's ideas will solve all our problems, but I do believe that recognition of what he saw and enactment of his recommendation will put us on the road to solving a lot of problems that are generally regarded as unsolvable -- housing affordability and supply, poverty, sprawl, pollution, water shortage, wealth concentration, money in politics, better cities among others. Necessary, though not sufficient. And it is frustrating that so few people are even remotely familiar with the ideas.
Two of my favorite recent books on the subject are "The Mason Gaffney Reader: Essays toward Solving the Unsolvable" and Walt Rybeck's "Re-Solving the Economic Puzzle."
I think there are solutions, and want others to have the chance to consider them!