"Just for the record
Given the title of my talk, I should define and briefly discuss what I mean by the Technological Singularity:
It seems plausible that with technology we can, in the fairly near future, create (or become) creatures who surpass humans in every intellectual and creative dimension. Events beyond this event -- call it the Technological Singularity -- are as unimaginable to us as opera is to a flatworm.
The preceding sentence, almost by definition, makes long-term thinking an impractical thing in a Singularity future.
However, maybe the Singularity won't happen, in which case planning beyond the next fifty years could have great practical importance. In any case, a good science-fiction writer (or a good scenario planner) should always be considering alternative outcomes.