Most of these are pretty insane and don't reflect an improvement in utility of any existing technology in any meaningful way, or if they do then they seem to defy a pretty basic understanding of physics. Who made these predictions? I feel like I could come up with a much better prediction for 2115 than have been made here about 2000, but I've also got a better understanding of technology than the general population.

Since I'm criticizing the predictions made by others, I might as well throw my predictions for 2115 out there as well:

- Oil industry will still exist, but in a very limited fashion and will be highly regulated.

- Oil will mostly be replaced by advanced battery, solar, and fusion energy. Batteries will be designed to be more durable and longer lasting to cope with the pollutive nature of disposable batteries.

- Air travel will be less common due to increased counter-terrorism measures that no one asked for.

- Ground based travel and transport will be mostly automated due to its massive success in reducing accidents while at the same time increasing vehicle speed substantially (automation has allowed for better coordination between vehicles, eliminating traffic jams and slow drivers)

- Improvements in energy tech have also improved travel distances between charges, further incentivizing land based travel, which is now considered more safe than air travel.

- Greater divide in socioeconomic statuses - the middle class is almost non-existent, however living conditions for the lower class have also improved as a result of automation and increased government aid.

- Automation is everywhere. Transportation, food services, factories. Most blue collar jobs now revolve around maintaining and creating automata, while white collar jobs remain a human task, however, work in those jobs relies heavily on computers and robotic assistance.

- Drones patrol the skies performing all sorts of tasks. The night sky in the will look similar to a busy highway at night.

- We've cracked certain functions of the human brain. Gaining knowledge on a subject is now based on what your interest is, not your mental ability. Schools still exist, but their focus is on enabling children to discover their passion. Some find it earlier than others, and once you do you can opt to become an expert in that field.

- Death will be a choice for those with money - albeit you won't get to choose to keep your body. We're capable of repairing large portions of the human body with synthetic parts, however we haven't solved aging. Death will either be final, or you can choose to be synthesized into a virtual world - however those alternative endings are commercial and require a paid subscription to maintain.

- Wealthier people are generally more beautiful thanks to advancements in gene editing.

- Tension caused by war is increasing as the US continues to automate its war efforts.

I could go on for a while, but I think most of the things here aren't too outlandish. At the very least most of them would be possible if you have money. Just my two cents though. I'm interested to hear what others think.