Open Chess project delivers electric shocks for bad moves and costs $22 versus $600 commercial smart boards through open-source DIY design.

We often mistake the "aha!" moment of a clear explanation for actual mastery. The feeling of learning can be a psychological illusion, but we can spot the difference.

NBC News and MSNBC correspondent Jacob Soboroff talks about what it's like to be a road warrior, following political candidates on the campaign trail, and reporting from the road.