You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
For breakthrough technology, it seems to take about 20 years to go from proof-of-concept to successful real-world deployment at scale (e.g. ICE cars, personal computers, smartphones, self-driving cars…) What 2020 proof-of-concept tech will change the world by 2040?
Another way to look at it: if you stepped out of a time machine in the year 2040, all of the crazy tech you'd see around you would be tech that already exists today in a mostly-working prototype form (probably under the radar) Would have been true for 1990 v 2010 and 2000 v 2020
Fully dexterous robot hand.
DNA based disease prediction and insurance companies charging extra for endangered individuals?
Artificial general intelligence probably
where is the proof of concept
CRISPR 3D printing Drones
3D printing at scale as a primary manufacturing technique, including for architecture
Artificial pancreas (cc @shanselman)
AI scientific research assistants.
2040 
okay
i like your optimism 
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
