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Comment: Re:Why it's non-obvious over Microsoft's prior art (Score 1) 408

by twistedcubic (#46691063) Attached to: Apple: Dumb As a Patent Trolling Fox On iPhone Prior Art?

Apple was trying to come up with a way to prevent butt-dialing and other unwanted device actions... Microsoft's video doesn't really show a slider. It shows touch buttons that look visually like sliders. But you can trip them just by touching in the active area for the desired state. This is shown in the video where the demonstrator runs their finger down a column of switches and they all switch. Apple requires an explicit "click and drag" operation to unlock.

Could you watch the video at 2:52 and explain how this is different from what you describe? Here is a quote from the video at 3:04:

"Having to use the sliding gesture makes the toggle slightly more difficult to use, but greatly reduce the chances of inadvertently switch the toggle."

Clearly, Apple won't be hiring you to represent them :)

Comment: Re:Hello 911? (Score 5, Informative) 449

by twistedcubic (#46615151) Attached to: WSJ: Prepare To Hang Up the Phone — Forever

This is not how it works. I've called 911 on a cell recently, and on a land line around 10 years ago.
When I called on the land line, the operator asked, "Are you MY NAME?", which means she had my information INSTANTLY.
When I called on a "smart" phone, I had to tell the operator where I was, so she could forward me to the right jurisdiction, and there was a little hold time.
To me, this is a big difference, because the time I called 911 on the land line, there were two men trying to break my door down, and being put on hold would not have improved my confidence.

Comment: Re:You know *nothing* about security (Score 1) 220

by twistedcubic (#46521493) Attached to: Malware Attack Infected 25,000 Linux/UNIX Servers
A correction:

6) Private keys can (and should be) protected with passwords, making them in effect a form of two-factor authentication (you HAVE the key, you KNOW its password). Passwords are a single factor.

The authentication tokens in "two-factor" authentication should be independent, and both should be required for access. Encrypting a key does not increase the number of tokens required for authentication.

Comment: More Mathematics (Score 1) 197

by twistedcubic (#46442005) Attached to: Ask Slashdot: Online, Free Equivalent To a CompSci BS?
Why not get a masters degree in mathematics (non-Ed)? While taking classes in higher mathematics you will encounter problems where you can apply your programming skills. And since you're a math teacher, taking more mathematics classes will make you a better mathematics teacher (yes, I know this is generally considered false). Also, it will improve your career opportunities in mathematics. Even if your current job is great, people in the real world get jealous of smart people and try hard to derail their success, ESPECIALLY in the education world.

Comment: Re:Why single out Whole Foods? (Score 1) 794

by twistedcubic (#46376171) Attached to: Whole Foods: America's Temple of Pseudoscience
There is one well-done study I read, which has yet to be corroborated (I haven't checked recently), which suggests an association between nitrites and Alzheimer's. ("Diabetes of the brain" is the term they used--do a Google search.) I'll never give up bacon, but since Trader Joe's sells nitrite-free bacon, which is cut better, tastes better, AND is cheaper than the $6/lb in grocery stores (Los Angeles), why in the world would I buy cured bacon when researchers are beginning to suspect nitrites?

Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true. -- Bertrand Russell