> Anyone who isn't involved in HFT should be in favor of rules that slow down trades to human time scales

What are you basing this on?

I’m a former algorithmic market maker. Every plan to “slow down trades to human time scales” I’ve seen were trivially gameable. They were always proposed by a group of concerned citizens, and then jumped on by my bosses, because if the market is slowed down to pre-HFT speeds, Wall Street can make pre-HFT profits on risk-free trading again.

Do you think the internet would work better if we forcibly increased latency? If we did, if the argument were this would flatten the market and better let small websites compete with CDNs, do you think that would actually happen? Google and Cloudflare would say “oh well,” and disassemble their servers?

Our markets have structural problems. They are mostly solvable. HFT is none of them, which is why you keep hearing about it from folks who don’t want reform.