I don't actually do that much for mental stimulation anymore. HN doesn't do it for me anymore since three quarters are about technology or industries I'm far removed from, plus I never liked the SV culture of overhyping and grinding out startups to fish for early retirement. It's that culture that gave us the gig economy and that encourages the sigma male grindset bullshit where if you don't work 16 hours a day maintaining a healthy daily balance of soylent, melatonin, LSD and meditation you're not cool enough.