Ask HN: What became possible or practical in 2015, which wasn't in 2014?

Technology moves fast when viewed over a decade; what's changed in the last year that you think is noteworthy, or has changed the way you behave or the things you want to see created?

- Is anything possible now, which wasn't possible a year ago?

- Is anything affordable now, which was too expensive in 2014?

- Is anything practical now, which was impractical in 2014?

Taking a cue from a WaitButWhy.com article on Elon Musk[1], and the sections "What was possible in the world in 2005 is very different from what’s possible today, and it’s a huge (and rare) advantage to be working with an up-to-date [view on Reality]" and "Conventional wisdom is slow to move, and there’s significant lag time between when something becomes reality and when conventional wisdom is revised to reflect that reality. And by the time it does, reality has moved on to something else. [..] By ignoring conventional wisdom in favor of simply looking at the present for what it really is and staying up-to-date with the facts of the world as they change in real-time — in spite of what conventional wisdom has to say — [people] can act on information the rest of us haven’t been given permission to act on yet"

[1] http://waitbutwhy.com/2015/11/the-cook-and-the-chef-musks-secret-sauce.html