You are welcome to your opinion. But this is not a mass produced product, those things would add cost. Why use the worlds resources on a paper manual when it's online and really easy to remember once you've tried using the Tera.
If the Tera doesnt fit your needs then dont get it. the truth is it would probably cost a lot more to sound the way it does and have a screen. I honestly hate the idea of a screen on the Tera Player. The genus of this device is it's coded in assembly. That means he's coded only 1 step removed from binary values to handle everything. He had to make it as efficient as possible so it would even work in such a small device and adding a screen would mean adding more code and probably stepping away from something that enables the Tera Player to perform so well. Tradeoffs for everything though, but to me it's great just popping in a card and instantly getting to the music

interconnects, pouch, manual, rubber feet, etc.
i'm not saying that i'm willing to pay more for the extra goodies. it's the reciprocal, tera player should have been priced way lower without the extra goodies. i admit this player is really impressive, but what's inside the box does not really justify the price he's charging.
To tell you the truth, i was quite in shock when my friend showed me the box of tera player.. it's just too horrifying to imagine this thing costs $1100. put a screen on it, maintain the same sound quality, then i can safely say this thing worth the $1100 price tag. i would not even hesitate to buy that player in an instance.. but as for this current product? the price is just insane..
























Also mind that you need to set a number of trials beforehand (12 is good), and in order to pass the test conclusively you need a p value that's less than 0.05 (or 5%). Anything higher will prove nothing.