that's very interesting, is there a place to read his achievements related to Steam? genuinely curious, because Steam is very popular now, and wondering what he did there, and whether his theories helped boost Steam economy/marketplace or not

He has however written about the game before, and been interviewed about it: https://www.yanisvaroufakis.eu/2014/01/30/war-spikes-in-the-...

Ah, that's correct.

Got it wrong, because he did write some articles about the EVE economy, like this one: https://www.yanisvaroufakis.eu/2014/01/30/war-spikes-in-the-...