Pandalous. There is a great deal that could be said about all this. It is true that for a time people thought that axiomatizing maths and science is a great thing to do and yes it is often appropriate where clarity is needed and we want a final system. It is the final form of a theory. (If physics stops for awhile they like to sit around and axiomatize stuff). If we try to do that for mathematics, it goes like this: All of maths can be derived from number theory. For example even geometry can be coordinatised so it's really numbers. Now number theory can be written as set theory.
It is a foundation, of a set of axioms. I.e. given the axiomatic basis can we guarantee that we won't, using a chain of reasoning, obtain a result that directly contradicts another result, also derived by a chain of reasoning using the same axioms and rules of inference? Maths had better be consistent or we are in a mess. Godel (1930s) came along and thought about this. Is there a workaround? Is maths consistent? The Case of the Stolen Laptop: How to Encrypt, and Why. There’s an investigator I know, top of her profession, who once put her laptop in the trunk of a cab.
By the time she reached her hotel, the laptop was gone. This happens thousands of times a year at airports, train stations, libraries and coffee shops. Sometimes the thief wants your hardware. Sometimes your data turns out to be more valuable, or its loss more damaging. (It’s pathetically easy to find examples.) In this case our investigator was onto something hot. And no, your log on password is not an obstacle. What to do There’s no single answer to this problem, but one of the first things to think about is encrypting your computer.
You don’t need to be a spook to care about encryption. Before you start No kidding, read this first. Make sure you won’t get in trouble with your IT department if it’s a computer you use at work.Make a backup of the whole PC, and test that it works by restoring one or two files. How to encrypt your drive, for free Nothing is absolute in security. Turn Your Old Router into a Range-Boosting Wi-Fi Repeater.
Virtual Water. How much water does it take to grow a hamburger? USGSWater Scien. What is the water content of things? Water is needed to grow not only everything we eat but also to produce almost all the products we use every day. This water is either supplied by nature as precipitation and/or added by people during the growing/production process. You can't tell by the size of a product or the appearance of a food how much water was actually used to produce the item. Use to form below to enter your guess on how much water is used to produce some common foods and products. But, please realize this whole exercise is meant to give you an estimate of how much water is needed in food and product production. It is very difficult to come up with accurate water-use numbers and the large variety of food-growing and production techniques used worldwide means that the amount of water needed can vary a huge amount depending on how and where the food is grown.
Yet another consideration is how far back do you go in the chain of production to estimate water use? UNESCO Water Footprint.
The Designers Accord. Innovation Happens Elsewhere.