An idea usually refers to a person's thought or concept. Ideas can be of several types categorized by how other people perceive them:

• Simple ideas - for example, forming a list of possible leisure activities or food to eat
• Novel ideas - an invention or new way of thinking (a new mechanism or paradigm)
• "Dangerous" ideas - overturning the conventionally accepted status quo (as Darwinian evolution or Heisenbergs uncertainty principle)
• delusional ideas - such as believing your pet hamster is an alien or belief in some religious sects
• psychotic ideas - an irrational belief caused by a psychiatric condition

[edit] See also+

• Belief
• Expectation (epistemic)
• Global Ideas Bank
• Mind Map
• Freemind

[edit] Other meanings

Ideas may also refer to:

• Ideas (retailer), a Pakistani retail chain
• Ideas (radio show), a Canadian radio program
• IDeaS, an emulator for the Nintendo DS
• I-DEAS, the CAx software
• Plato's theory of forms, a theory of abstract entities
• Ideas (book), a work of philosophy by Edmund Husserl
• Ideas festival, a biennial event in Brisbane, Australia presented by the Queensland Government

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