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Comment Re:Imagine a bike that only needs tires and brakes (Score 1) 345

You'd not want a hub motor because it increases unsprung weight which has an adverse effect on handling. Same with electric cars - Tesla for instance doesn't use hub motors but the traction motor for the Model S is attached to the structure of the body.

Then again, we are talking about a Hardly Rideable rather than a motorcycle...

Mars

Elon Musk: I'll Put a Human On Mars By 2026 275

An anonymous reader writes Elon Musk says that he'll put the first human boots on Mars well before the 2020s are over. "I'm hopeful that the first people could be taken to Mars in 10 to 12 years, I think it's certainly possible for that to occur," he said. "But the thing that matters long term is to have a self-sustaining city on Mars, to make life multiplanetary." He acknowledged that the company's plans were too long-term to attract many hedge fund managers, which makes it hard for SpaceX to go public anytime soon. "We need to get where things a steady and predictable," Musk said. "Maybe we're close to developing the Mars vehicle, or ideally we've flown it a few times, then I think going public would make more sense."

Comment The world... (Score 5, Insightful) 236

The world is analogue. Someone's going to have to design the analogue front end to your digital system. Even if you have a ready made analogue front end, you still have to understand the analogue world if you ever hope to design high speed digital systems. When it comes to the actual voltage levels on your PCB and signal integrity, the nice clean world of software where you can just expect the hardware to be predictable and just work with no effort goes away, you have to have a little bit of a clue about the analogue side if you want your high speed digital signals to reach their destinations intact. Another example is your (A)DSL line, it might be called "Digital subscriber line" but it required analogue design to get the signal from your modem (and it is a modem - it modulates and demodulates the signal) to the DSLAM in your phone exchange.

You might not need as many analogue engineers as you may have (say) in the 90s, but they'll never go away because the world is analogue, and the analogue world constantly impinges on your digital signals especially once you pass single digit MHz speeds.

Comment Re:Salae logic (Score 1) 172

I picked up a used Tektronix 100MHz 1Gsample/sec digital storage scope for around $300. It's an older one with a CRT but it's a *GOOD* scope and has a good analogue front end. I recently upgraded to an LCD version of the same scope (since I wanted enough portability such that it would fit in an airline carry-on) for about the equivalent of $600 (again Tektronix 100MHz 1GSample/sec). The newer LCD based one also has much better firmware. But not withstanding, the old CRT one is still a good instrument and not horrifically expensive. There are always dozens of them on ebay.

Comment Slashdot (Score 5, Informative) 197

These kinds of stories have been popping up on Slashdot for a while, but I note Slashdot *STILL* doesn't have an IPv6 address even though it's a site supposedly run by and for technologists. Meanwhile, Facebook, a site made for teenagers to post selfies on, has had IPv6 support for three or four years.

Comment Re:Throw the book... maybe literally at him. (Score 1) 220

It doesn't matter who, anyone trying to get you will exaggerate the numbers.

Years ago I once ran an unauthorized MUD on one of the university's servers, and a friend wrote something in LPC which had a bug in it (which caused the MUD to fill the partition my home dir was on to fill up overnight). When the sysadmin was trying to make me look like the biggest monster to have logged onto the university's Sun box, he was pointing out that the system had to support over 10,000 users and I had singlehandedly denied access to all 10,000 users with my antics.

The problem was (and the sysadmin well knew this) this number was grossly exaggerated. To start with the discs were partitioned so each course was in its own separate filesystem, so I only filled up the filesystem for those on my course. Out of my course perhaps only 5 people used the central Sun system. Secondly, there may have been 10,000 users in /etc/passwd, but 9000 of them had never logged in (and never would log in). After he unlocked my account I was going to rebut his angry email by mentioning this and running a shell script to show how few users had ever logged in, but for some reason 19 year old me had a rare flash of good judgement and decided to let sleeping dogs lie.

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