The single biggest barrier for me is questions that I could google for, but I don't think of it, because in my mind it's just a thought or need, not an explicit question.

For example, issues about cooking, while cooking. Something like a (waterproof) iPad might be one factor in the solution, perhaps with (excellent) voice recognition.

But another problem is that, when I have searched on question like this, the answers are often not there, or buried amongst a lot of inaccurate/unhelpful answers to the question - and it ends up taking an hour, and not actually answering the question. eg. how to stop a rice cooker burning the rice (ans didn't come from google: leave it 15mins after it's cooked + cook a larger amount).