Those are OLPC "laptops", very cheap hardware and open source software (Sugar interface). They have a large resolution, and I think are resistive touch screens as well. Is it as productive as a full-blown MBP? Of course not. But when I was a kid, we didn't have portable computers like these at all. We didn't even have cellphones. I had a Super Mario Watch with Tetris on it. That was mindblowing. And "nerdy". And small. And awkward to use while on wrist.