I know longer believe in Techno-utopia or Accelerating Returns
What's been brought to light on the matter is that information technology does have limits, it has not been steadily exponential, it's been dropping and should plateau in 2020. Also, computers don't work like human intelligence, no matter how fast or powerful they get, they aren't intelligent. Lastly, Utopia isn't viable, it cannot be implemented, those who are able to gain power seem to be able to oppress. We have human nature and the law of thermodynamics.
However, I do believe that we will manage to colonize space, and spread out, and that we'll always find new ways to better implement technology even when it's reached its limits, or achieve linear gains in computer technology as we make it larger, but compression stops at a certain point. Ultimately, we won't escape an entropic event unless we utilize Planck scale energy, but we might as well harness dark energy and achieve instantaneous inter-galactic space travel. Are those exploits possible?