This fleeting world essay

On the Shortness of Life translated by John W. Basore, Loeb Classical Library London: The majority of mortals, Paulinus, 1 complain bitterly of the spitefulness of Nature, because we are born for a brief span of life, because even this space that has been granted to us rushes by so speedily and so swiftly that all save a very few find life at an end just when they are getting ready to live.

This fleeting world essay

How do we get people to understand programming? Khan Academy recently launched an online environment for learning to program. It offers a set of tutorials based on the JavaScript and Processing languages, and features a "live coding" environment, where the program's output updates as the programmer types.

Because my work was cited as an inspiration for the Khan system, I felt I should respond with two thoughts about learning: Programming is a way of thinking, not a rote skill.

Learning about "for" loops is not learning to program, any more than learning about pencils is learning to draw. People understand what they can see. If a programmer cannot see what a program is doing, she can't understand it.

This fleeting world essay

Thus, the goals of a programming system should be: JavaScript and Processing are poorly-designed languages that support weak ways of thinking, and ignore decades of learning about learning.

And live coding, as a standalone feature, misses the point.

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Alan Perlis wrote, "To understand a program, you must become both the machine and the program. A person is not a machine, and should not be forced to think like one. We turn it into something that's understandable by people.

Contents The concept of a system split between the computer and the head was derived from Will Wright's thoughts on games. A programming system has two parts. The programming "environment" is the part that's installed on the computer.

The programming "language" is the part that's installed in the programmer's head. This essay presents a set of design principles for an environment and language suitable for learning. The environment should allow the learner to: The features are not the point We often think of a programming environment or language in terms of its features -- this one "has code folding", that one "has type inference".

This is like thinking about a book in terms of its words -- this book has a "fortuitous", that one has a "munificent". What matters is not individual words, but how the words together convey a message. Likewise, a well-designed system is not simply a bag of features.

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A good system is designed to encourage particular ways of thinking, with all features carefully and cohesively designed around that purpose.

This essay will present many features! The trick is to see through them -- to see the underlying design principles that they represent, and understand how these principles enable the programmer to think.

Read the vocabulary Here is a simple tutorial program that a learner might face: For the sake of comparison, the examples here will use the same languages as the Khan Academy system, JavaScript and Processing. Before a reader can make any sense of this code, before she can even begin to understand how it works, here are some questions she will have: What does "fill" mean?

Lucius Annaeus Seneca: On the Shortness of Life While controversial, the scientific theory that some insects have in fact taken on protective coloring to camouflage themselves in an industrially altered habitat is an apt metaphor for our current environmental predicament. The light-colored moth predominated in the population, presumably because it blended with the white birch trunks and the light lichen on oak trees.

What do those numbers after "fill" mean? What do those numbers after "ellipse" mean? What units are these numbers in? What ranges are they in?This Fleeting World: A Short History of Humanity is a compact, easy-to-read overview of world history ideal for curriculum development, classroom preparation, and student review from one of the editors of the Berkshire Encyclopedia of World History: “the benchmark against which future history encyclopedias are compared” according to Booklist magazine.

This fleeting world essay

This Fleeting World: A Short History of Humanity (This World of Ours) - Kindle edition by David Christian. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading This Fleeting World: A Short History of Humanity (This World of Ours)/5(55).

This Fleeting World takes about two hundred and fifty thousand years worth of history and compacts it into a one hundred and twenty page book. A great historian can make clear the connections between the first Homo sapiens and today's version of the species, and a great storyteller can make those connections come alive.

This fleeting world ties the start of humanity, to current life very efficiently. The moment the earth was made was when history was first conceived. The introduction tells us about the making of planet Earth, which sets up the scene for the arrival of the Foragers.

This Fleeting World Essay – Free Papers and Essays Examples

Get this from a library! This fleeting world: a short history of humanity. [David Christian] -- "A great historian can make clear the connections between the first Homo sapiens and today's version of the species, and a great storyteller can make those connections come alive.

David Christian is.

This Fleeting World by Javaughn Martinez on Prezi