3D Printers Have a Lot to Learn from Sewing Machines — Sewing does not create more waste but, potentially, less, and the process of sewing is filled with opportunities for increasing one’s skills and doing it over as well as doing it yourself. What are quilts, after all, but a clever way to use every last scrap of precious fabric? (via Jenn Webb)
OpenStack: A Plea — critical take on OpenStack, also in this presentation. Notes the proliferation of inefficiency, devops bolted onto the side, and the long feedback cycle. You code differently when you have a pager. (via Sam Ramji)
Some Lecturing Heuristics — Realize further that your mood may be determined by only a few people. A smiling nodder will make you feel good, and you will do better. People reading newspapers will make you feel bad, and you will do worse. Do not permit people to do things that make you feel bad.
Bionic Legs Let Patients Walk Again — The Ekso costs about $100,000 and was purchased with a grant from Baptist Health Foundation. Chara Rodriguez, a physical therapist and neurologic clinical specialist at University Health System, called the machine “the Maserati of the rehab world.” (via Robot Economics)
Roundup of CS in Education Systems (Economist) — Above all, the new subject will require teachers who know what they are doing. Only a few places take this seriously: Israel has about 1,000 trained computer-science teachers, and Bavaria more than 700. Mathematics and computer-science graduates generally choose more lucrative trades; the humanities and social-science graduates who will find themselves teaching coding will need plenty of support.
gobot — Go framework for hardware and robotics comms, with Arduino, Sphero, (and more) backends.
Keybase.io Writeup (Tim Bray) — Tim’s right, that removing the centralised attack point creates a usability problem. Systems that are hardest to attack are also the ones that are hardest for Normal People to use. (Can I coin this as the Torkington Conjecture, with the corollary that sufficiently stupid users are indistinguishable from intelligent attackers?)
De-Design the Web — quiz, can you recognise common websites from just their wireframes? For the non-designer (like myself) it’s a potent reminder of the power of design. Design’s front of mind as we chew on the Internet of Affordances. (via USvsTHEM)
Words I Hold Dear (Slideshare) — short but effective presentation on values in business. If you are confident that you can bear responsibility, and will not do anything immoral, illegal, or unethical, then it is not too hard to choose the path that promises the most adventure.
Android Development for iOS Devs — in case you had forgotten that developing for multiple mobile platforms is like a case of fire-breathing butt warts. (not good)
The World Through the Eyes of Hackers (PDF) — I’ve long thought that the real problem is that schools trains subordinates to meet expectations and think like a Nice Person, but defence is only possible when you know how to break expectations and think like a Bad Guy.
High Volume Web Sites — Tim Berners-Lee answers my question on provisioning a popular web server in 1993. The info.cern.ch server which has the Subject Catalogue gets probably a relatively high usage, about 10k requests a day, or (thinks…) one every 9 seconds. the CPU load is negligible. In fact of course the peak rate is higher, but still its not really a factor. That was when the server forked a subprocess for each request, too. See also one of my early contributions to the nascent field of web operations (language alert).
Tim Berners-Lee Calls For Web Magna Carta (Guardian) — Unless we have an open, neutral internet we can rely on without worrying about what’s happening at the back door, we can’t have open government, good democracy, good healthcare, connected communities and diversity of culture. It’s not naive to think we can have that, but it is naive to think we can just sit back and get it.
BroApp — Automatically message your girlfriend sweet things so you can spend more time with the Bros. Reminds me of the Electric Monk in Dirk Gently’s Holistic Detective Agency. The monk notices that humans have machines to watch TV for them. Now we have machines to be shitty boyfriends for us. (via Beta Knowledge)
World Science U — quick answers, short courses, long MOOCs. I wonder how you’d know whether this was effective at increasing scientific literacy, and therefore whether it’d be worth doing for computational thought or programming.
Ford Invites Open-Source Community to Tinker Away — One example: Nelson has re-tasked the motor from a Microsoft Xbox 360 game controller to create an OpenXC shift knob that vibrates to signal gear shifts in a standard-transmission Mustang. The 3D-printed prototype shift knob uses Ford’s OpenXC research platform to link devices to the car via Bluetooth, and shares vehicle data from the on-board diagnostics port. Nelson has tested his prototype in a Ford Mustang Shelby GT500 that vibrates at the optimal time to shift.
Cost-Efficient Continuous Integration at Mozilla — CI on a big project can imply hundreds if not thousands of VMs on Amazon spinning up to handle compiles and tests. This blog post talks about Mozilla’s efforts to reduce its CI-induced spend without reducing the effectiveness of its CI practices.
Mapping Twitter Topic Networks (Pew Internet) — Conversations on Twitter create networks with identifiable contours as people reply to and mention one another in their tweets. These conversational structures differ, depending on the subject and the people driving the conversation. Six structures are regularly observed: divided, unified, fragmented, clustered, and inward and outward hub and spoke structures. These are created as individuals choose whom to reply to or mention in their Twitter messages and the structures tell a story about the nature of the conversation. (via Washington Post)
yasp — a fully functional web-based assembler development environment, including a real assembler, emulator and debugger. The assembler dialect is a custom which is held very simple so as to keep the learning curve as shallow as possible.
Fast Approximation of Betweenness Centrality through Sampling (PDF) — Betweenness centrality is a fundamental measure in social network analysis, expressing the importance or influence of individual vertices in a network in terms of the fraction of shortest paths that pass through them. Exact computation in large networks is prohibitively expensive and fast approximation algorithms are required in these cases. We present two efficient randomized algorithms for betweenness estimation.
Twitter I Love You But You’re Bringing Me Down (Quinn Norton) — The net doesn’t make social problems. It amplifies them until they can’t be ignored. And many other words of wisdom. When you eruditely stop using a service, that’s called sage-quitting.