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What is Holism?

A Wikipedia definition is: Holism (from ὅλος holos, a Greek word meaning all, entire, total) is the idea that all the properties of a given system (biological, chemical, social, economic, mental, linguistic, etc.) cannot be determined or explained by its

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Posted in System Thinking

Ultra-mobile PC (UMPC): PC Portálites de bajo-coste, seguros, accesibles y usables

Después de la iniciativa de Nicholas Negroponte con su OLPC, PC Portátil para niños de 100 USD para fines educacionales, los fabricantes de Portátiles han visto una interesante oportunidad de negocio; hacer portátiles low-cost. Asustek, que fabrica portátiles para HP,

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Posted in Security, System Thinking

The Principle of Psychological acceptability

Jerome Saltzer and Michael Schroeder in “The Protection of Information in Computer Systems”: “[…] Psychological acceptability: It is essential that the human interface be designed for ease of use, so that users routinely and automatically apply the protection mechanisms correctly.

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