ITGS Syllabus

Thursday, July 13, 2006

Topic 113

Correspondence of the model with reality. by Tomer

Predictions and models are tools used to describe the world around us and the world that could be around us, but most importantly, they are used to predict what is going to happen based on current knowledge. Models have place in almost every field including, mathematics, physics, chemistry, meteorology, astrology, economy, and geology. However, sometime models are wrong, which may have some negative consequences.

1. What are the issues involved in ITGS?
2. How did this technology emerge?

Information in the IT world is always presented in models, mostly mathematically based. Whether it is a 3D graph, animation, or just a calculation, to generate a model a certain computation power is required. The stronger the computer used to generate the model, the better the model can be generated. Mass computations are required to predict air currents, while a simple formula can generated a needed to calculate velocity in physics. Therefore to predict things like the weather, strong computers are needed.

3. Who are the stake holders?
4. What are the advantages and disadvantages for these stake holders?
5. What solutions can overcome the problems?

The stake holders are those effected by the model correctness, if it is a weather prediction model, everybody is effected, if it is a spacecraft launching model, the astronauts are effected. The advantage of a model is being prepared for evens to come, but at the same time, a model can be wrong. Although models give a good prediction, there is always a chance that they may be wrong. In reality unexpected things can occur, however, if more computing power is available, better models can be formed.

6. What areas of impact does it affect?
7. Evaluate the impact locally and globally.

Thus, because modeling is so widely used in many fields, it has a tremendous impact on the way people live, and in the innovation of science. The impact is both global and local, If models of weather were to correspond with reality 99% of the times, then people’s lives can be saved from storms, and every one would know what to wear the next day. Similarly everything would be predictable, however, such precision in modeling can only be achieved with very high computing power, perhaps higher than today’s technology allows.


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