You use Java in a lot more things than you think. Java Desktop Apps are terrible and the updater is annoying as hell, but it's also likely the language powering most every device you use and many web applications you use day to day.
The E-10 has been murder on my late 70's vehicle -- I've had to replace all rubber gas lines and have to tinker with the carb much more often. I highly prefer 100% petrol. Stabil seems to help when I have to use E-10. I haven't noticed any issues (even change in mileage) in my 2005 car however.
I have bought far more games based on gameplay I watched a fan play on a stream or video than those I have just "heard of". This is the nearly same thing as seeing a game at a friend's house and then wanting it yourself. It's just that this is done on the internet now.
'Real-time' usually seems to mean to a lot of people 'you don't have to do a processing step after saving data to see results, but instead see a stream as the data is collected'. 'Real-time' doesn't require that the system have no lag (impossible), but at least latency should be known. Which, I will grant you, is likely not known in this case.