The pros and cons of a technological system that uses gravitational, electric, and/or magnetic fields. Please analyze the technology's operation and the advantages and disadvantages of the impact of this technological system on society and the environment. Let me know a clear opinion on whether the technology is good, or not so good, for society and the environment. Please use words that a normal person that doesn't study science can understand. Pictures would help.

You can use the following:

• home entertainment system
• computer
• use of gravitational field maps to correct navigational errors in unmanned underwater vehicles
• magnetic strips on credit cards
• magneto-rheological fluid dampers (used to absorb shocks from earthquakes)
• use of radio frequency identification chips for inventory tracking
• satellites (one or more of weather, communication, GPS, etc.)
• particle accelerators (in general, or for a specific purpose)
• radiation therapy for cancer tumours
• electrical fields created by high voltage lines
• zero gravity experiments on agricultural products
• use of gravitational fields to search for mineral deposits
• SNO (Sudbury Neutrino Observatory)
• study of dark matter and black holes
• experiments done in bubble or cloud chambers