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Visualizing Ethernet Speed
anthemaniac writes "In the blink of an eye, you can transfer files from one computer to another using Ethernet. And in the same amount of time, your eye sends signals to the brain. A study finds that images transferred to the brain and files across an Ethernet network take about the same amount of time." From the article: "The researchers calculate that the 100,000 ganglion cells in a guinea pig retina transmit roughly 875,000 bits of information per second. The human retina contains about 10 times more ganglion cells than that of guinea pigs, so it would transmit data at roughly 10 million bits per second, the researchers estimate. This is comparable to an Ethernet connection, which transmits information between computers at speeds of 10 million to 100 million bits per second."
Secret questions are only as secure as the secret itself - if you just gave that answer off to some web site, what's to stop you from giving it to another? Imagine this - you have an account of someone you want to break into, and you know their email address. You send them an email (tailored to not be like spam at all) inviting them to some special promotion on a site you set up, complete with login and the same security question. Anyone who answers this, poof, they have given you access to whatever account it is that you seek.