>Armstrong belongs to a generation of evangelists who view digital currencies, and the blockchain technology on which they’re based, as tools that will make investing, borrowing, and saving money faster, cheaper, and more egalitarian.<p>My main question about cryptocurrencies has always been the "faster, cheaper" thing. Last I heard it was pretty expensive to do a bitcoin transaction, and slow. The quote thrown around:<p>>The networks that Visa and Mastercard use process, in aggregate, “more than 5,000 transactions per second with capacity to process volumes multiple times that number. Bitcoin in contrast takes 10 minutes to clear and settle a single transaction vs. Ethereum that takes 15 seconds.”<p><a href="https://www.marketwatch.com/story/why-bitcoin-wont-displace-visa-or-mastercard-soon-2017-12-15" rel="nofollow">https://www.marketwatch.com/story/why-bitcoin-wont-displace-...</a><p>I wonder what someone as heavily invested as Armstrong would say to that?