I don't understand why infinite scroll implementations don't precalculate how long the page will be when all results have loaded. This would allow the scroll ba

I don't understand why infinite scroll implementations don't precalculate how long the page will be when all results have loaded. This would allow the scroll bar to actually indicate how far through the results you are(I'm thinking etsy not google images where they could keep going for days...). The second issue I have with them is that they wait until you scroll to the bottom of the page before more results are loaded. Why not just keep filling the results out until they're all loaded, that way the user wouldn't experience the loading glitch whenever they scroll down. For bonus points they could allow you to scroll to any point in the results before they're loaded and have the items at that point loaded while you're watching.