[Jaff]

The Singularity - The time when robots become smarter than humans - is inevitable and the experts predict 2029. Once that happens it's an avalanche of change. Smart robots make smarter robots who make even smarter robots in an exponential fashion. We have no way of knowing what will happen at that point. The ultra-smart robots will make decisions on a level we can't comprehend. We just have to hope they're friendly...... but be prepared if they're not......

Wikipedia Article

I'm reminded of it because of a recent conference about the topic in the news.

Here's an FAQ that explains it in a bit more readable way.