This is my MO for unknown numbers these days (which I only answer when I have a reasonable expectation of getting a call from a new contact). Automated systems will just disconnect when they think they got a dead line. Humans will go, "uh, hello?"
I started doing this a few months ago, and the number of spam calls I've gotten from certain area codes that used to call me without fail at least three times a day has dropped considerably.
I've had good results from answering spam calls, following the prompt to get a human to "resolve this matter with the IRS" or talk to "Visa and Mastercard customer service" and just screaming into the phone when they come on the line.
Seems to get me on a "don't call this number" list after a few goes.
Depends on if the study tried to control for this by also testing 2 more groups with single donation before/after the stressful task.
Can't access the original paper to confirm though.
"Blockstack binds (human-readable) domains to public keys to establish ownership of domains. These domains have associated data records as well. These small bindings are stored on the blockchain and are tamper resistant. The actual payload from the data records is stored outside of the blockchain because blockchains have limited storage space and are not meant to be used as general-purpose databases."
Blockstack project originally ran on namecoin. But it is not a secure blockchain.
Also, it stores much data in the blockchain, so it has scaling problems. Blockstack stores the zone file data in its own Atlas (DHT-inspired) network, and the zone files point to where the actual application-level data is stored.
Blockstack can work on top of any blockchain, so if Bitcoin is not the most secure anymore, it could be moved. Separating into different layers allows scaling and resiliency. And you don't have to run a blockchain, which is good, because that already exists.
The presentation from a16z comes to mind which had much more specific numbers comparing previous tech bubble to the current one. For example, the U.S. total funding in tech as % of GDP was 10.8% in 1999 vs. 2.6% in 2014 (slide 14).
http://a16z.com/2015/06/15/u-s-tech-funding-whats-going-on/
I had to look at them preparing for my AWS interview, then I had to parrot the principles back at them through my own experience.
"What was your biggest failure?"
(Alright...let me try to pick one of the leadership principle to parrot back through my biggest failure while also having my self-esteem show down thinking about my failures).