[DigiEggz]

Congrats on such an achievement. The remake looks great, but those DOS screenshots have an undeniable charm. With such a large scale game, something I always find interesting is uncovering what types of quirks and bugs bubble underneath the surface in the original version. Did you come across anything obvious in your testing?

[benstopics]

The reason I discovered options prices were wrong is because for fun I created an In-The-Money visualization graph for when you're doing advanced options spreads and I noticed that the graph was asymetrical and profitability and loss made no sense. So with the help of Claude we debugged the code and came up with a pricing strategy that was closer to Black-Scholes. And it really is because it takes into account industry volatility and such it was a fun side quest and Michael is happy with the result which I am very proud of! It really makes me confident that one day, long live the king but, he is in his 80s. Decades from now I will be able to survive on my own, I hope.

[davedx]

But wait... That's a real phenomenon in markets, called volatility skew!

Volatility Skew: An uneven curve indicating directional bias. Commonly, equity markets show negative skew (higher implied volatility for OTM puts), signaling concerns about downside risks.

Options pricing is a real rabbit hole.

https://www.luxalgo.com/blog/volatility-smile-vs-skew-key-di...

[jldugger]

Well, sometimes the way to teach people about pricing is to present them with incorrectly priced markets to exploit?

[michaelcampbell]

The market price IS the correct price. As is often said, "all models are wrong, but some are useful", including B-S.

[benstopics]

Options pricing was not correct, which MJ knew because he simply based it on lookup table using ratios of a spread on a random security in his brokerage account decades ago! I tried to implement Black-Scholes best I could, my one contribution to the engine thus far. MJ has patched several things such as runaway interest rates and commodity prices, too-easy crypto price movements. Typos here and there. Certain edge cases that only a highly skilled player would ever come across, which due to the Discord server brought those players out of the woodwork to battle harden the game and a place for them to report the things they always knew but never had the motivation to report. But for the most part the engine is pretty damn solid.

[pillefitz]

Sounds like MJ pioneered not only financial simulators, but also vibe coding