Data Presentation Tips

When we present data in a report or spreadsheet we often use some type of graph or chart to make the information clearer to understand. Unfortunately, using the wrong type of presentation can confuse the reader. Consider these data: And these two presentations: Intuitively, the second seems easier to read, but why? The first is […]
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Deepfakes: Beauty and Ugliness

This whole deepfake thing has me concerned and bordering on frightened. And I’m not the only one. I wrote earlier about how neural networks can make realistic-looking faces. They are getting better. A whole collection of the faces is now available for free. These are faces of people who do not exist at all. Samsung […]
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How deMorgan’s Theorems Can Help Programmers

Logic is an important aspect of programming and two important theorems in logic can be a big help to programmers. Basics of computer logic In software, logic is generally found in an if statement. This implements the idea that if some condition is true, then do something. For example, If the user clicks a link […]
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Is IPv6 Less Secure Without NAT?

NAT (Network Address Translation) is an IPv4 tool that is not used in most IPv6 deployments. This has caused some users to ask whether IPv6 is as secure as IPv4. What is NAT? NAT is a tool that allows multiple computers behind an Internet connection to share the single address of that connection. Thus, if […]
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What Is A Digital Signature?

In an earlier post, I promised to explain how hashes relate to digital signatures. Let’s begin with a thought experiment: suppose you have a document you want to protect. Specifically, you want to let others (“recipients”) know that you wrote the document and that it has not been changed by anyone since you wrote it. […]
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