This is a very basic visual introduction to the concepts behind a blockchain. We introduce the idea of an immutable ledger using an interactive web demo.

Blockchain is being touted around the world as a disruptive technology that could revolutionize finance, trade, legal systems, digital media, and much more. But blockchain tech has one big obstacle: it’s hard to wrap your head around.

I have used each of them for 15-20+ years. There is no best. They have different strengths and weaknesses.

[The common] advice [to develop technical skills] still reflects a "ladder-climbing" mind-set in a world that's looking a lot more like a lattice.
Focus On What You Can Actually Control
The ability to understand, interpret, and make informed decisions based on what you know comes with time and experience. So sure, you can brush up on a coding language on your own, but that won't necessarily help you make a strategic choice about an e-commerce site. The internet can’t help you there, but your network can.

Now, to be sure, society does need some superstars! Serious innovators, at companies and in academia, are the ones who create new fields like machine learning. But that doesn’t preclude a new mainstream vision of what most programming work actually is. For decades, pop culture (and, frankly, writers like me) have overpromoted the “lone genius” coder. We’ve cooed over the billionaire programmers of The Social Network and the Anonymized, emo, leather-clad hackers of Mr. Robot.