Accdg to Wikepedia: An idea usually refers to a persons 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
Don;t forget to get watch Las Vegas Shows when you are in Vegas ok. That’s a good idea.