We're going to be playing around with the Halo headset, in fact it coincidentally arrived today in a super fancy box that makes Apple packaging look cheap.
I'm not convinced, but it's worth running some comparative tests.
Tangible, if only incremental, gains are worth pursuit if the bang/buck adds up.
But I would agree that most would benefit more from consistent sleep, hydration, nutrition and balanced fitness before they hit high performance diminishing returns.
At Stanford U there's a Professor named Baba Shiv who works in this cognitive space.
He was pretty generous with his free time for pestering nerd students like me.
But only if that time is while conducting a very brisk walk up to the Dish.

The fittest and most mentally agile professor I ever had. Correlation/causation? He gets it.
Nootropics/cognitive enhancers are already being seriously worked on. Ritalin has been used and abused in hopes of improving exam scores with positive, but potentially long-term detrimental costs.
There's another headset (called Mindset) that my gut tells me might have some potential value:
https://www.kickstarter.com/projects/mindset/headphones
But more in the focus/concentration space.
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Vasper reminds me of the ROM machine in magazine ads in the 1990's(no offence):
https://m.youtube.com/watch?v=ht48PygqfiU
It will be interesting to see if independent controlled studies show any decent gains. If so, it opens up a new direction in human performance enhancement.
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On a related note.....the neurotransmitter serotonin mentioned in the Vasper article:
Serotonin levels begin to crash >40 years of age
People >40 pretty much have most of the power in the world, thus they are likely to be on the receiving end being pitched from everyone else with lesser power.
Pitch them as early in the day as possible while their Serotonin levels are higher and they are more accepting/suggestible.
I'm speaking at ILLC next month on the confluence of Moore's Law with the transposition of Military & Commercial tech R&D and how it will demand a transformation in non kinetic problem solving training & doctrine just to keep up with evolving off the shelf threats.
I'm trying to influence my way into an early morning slot for the tiny tailwind. Every little bit helps.
PS: It's worth mentioning I received overwhelming tangible and moral support for my successful research(now operational) project from a QP.
A QP who looks to be moving onto a VERY influential role.