Google's failure to respect the several dozen times I've tried to turn off Instant slows me down more. It's like that Sesame Street skit where they ask for directions, but run off partway through the answer.
A big part of why I consider HN worthwhile to read and post to: we only have time to even attempt executing on so many ideas, but maybe someone else is working on it. Like a big "take an idea, leave an idea" jar.
Since couples tend to collect a small number of sitters and stick with those - frequently friend-of-friend's older children within social groups (church, suburban neighborhood, etc.) - the most tractable approach is more likely to be a calendaring and booking system for sitters vs. a "vetted employee" paradigm.
And yet, Star Trek falls firmly into the social SF camp. The tech is incidental, left abstract or waved away with babble so that the personal interactions can proceed. Obsessing over the latest gadget incarnation wrapped in shiny branding is just the opposite, consumerism rather than tech which quietly enables.
You can't remember everything. The real test is how well you can function once you hit "here be dragons" - can you figure it out reasonably quickly and then be back on your way?
I know a few companies with rather successfully sell "Made in USA, from USA-sourced fibers" blankets in the $200 to $2000 range. The outlook is considerably more favorable if you go after the market segment with usefully high margins vs. raw market share (see also: Apple).
Simple fact: there are orders of magnitude more people in the world struggling to use the most basic functions of Microsoft Word than there are people who can write Hello World. Anything which makes tasks easier for people in group A is valuable, even if it's already trivial for people in group B.