This is irrelevant. You don't have to show brick every time. We say sugar is sweet. No body experience how sweet is defined by other. Still we all believe it is sweet.
That's a bit different. The definition of sweet is basically defined as "the experience you get when eating sugar". It doesn't matter for this purpose if that experience is completely different for you - all that matters is that we both know that "sweet" is basically a synonym for "your experience of sugar".
Note that this definition allows you to predict a lot of things:
1. You can predict that you'll have the same experience when eating other things which are not sugar, but which you know cause the same experience in you.
2. You can predict, at least in broad outlines, whether people will find this experience pleasurable or not (again, on average, broad outline, but still better than chance).
3. You can predict that someone without a sense of taste won't experience anything when eating sugar.
That's why this definition is meaningful. Of course I can play word games all day about "can you show me 'sweet'???". But those are word games that are trying to hide the idea of what a definition is and what we use it for.
cool. I was looking to build something like this for a while. But never give serious thoughts. I am inspired again now. Along with links/bookmarks, I really want a support for words also. Because many times, it is just easy to save words and later query using google e.g. Radix Sort
Absolutely agree with you. Without context and purpose there is no meaning in action. And CS is very broad field. Learning theory without practical is like wondering forest without knowing path. Now if forest is small, it may work but if forest is big then you will definitely lose.
I never understand one point. I am using bunch of paid services and many free services. For paid services, I am paying from first day but in case of free services when they start charging I find alternatives.
