and people who say you get insights on acid are bullshitting you, it's nothing special. at best, it makes you think about things you wouldn't otherwise but that's only because in normal times, those things are fucking obvious and no one would normally spend 30 minutes running it over in their mind until it turns into a enormous mess and out pops a weird insight.
I've had some really dumb insights about cats, but I've also had some insights about myself that have caused me to change my behavior for the better. It's not a consistent thing and it's definitely not something that happens super frequently, but it definitely happens.
And do you know how much you took? Because I've taken enough that I absolutely was not fully aware of what's going on around me.
Always keep in mind how much you took, and pay attention to any method of time tracking, be it a regular rhythmic beat or a clock. You have no idea how much those little nuggets of information help when the rest of your senses start going AWOL.
Funny thing about that 30-minute thing, at least according to my experiences I've suffered personal levels of time dialation which makes that half-hour feel like a few hours, mind you, talking about something just as absurd. My topics usually involve existentialism of sorts, like regarding time travel: Is the travel method relative or absolute, and by what means are you executing said travel (Reality/dimension traveling (or Sliding) with an offset by the time variable? FTL (or Doc Brown method)? Close your eyes really hard and believe?)? Does it guarantee you'll stay on the same planet, but at a different time in the same exact place relative to the planet and it's rotation, instead of absolutely by reality (meaning all time travelers Stephen Hawking invited died in space (or buried inside a mountain or wandering asteroid)) at a single point of time, and there's a perfectly good reason why nobody attended, and how Hawking was proved time travel doesn't work. (hint: you forgot to consider absolute-space-travel where time is concerned, jackass. Universe, galaxy, system, and planet. Keep those variables in mind.))?
Mind you, the sense of humor and silly, yet, good points, is a frequent occurrence with me under that state.