Does thought contains energy?
WARNING Very waffly answer that I am making up as I go along. I would imagine that a thought uses energy, but to say that therefore it contains energy would be a bit of a jump. Thoughts physically exist as electrical impulses in the brain. So there must be some energy to make them work. Perhaps all this energy is used up as we have the thought, or as we make the connection between synapses. Once the connection is made the result would be an inert physical object (a connection between two synapses), it would need an input of energy to make it work again when we remember it. Perhaps some of the energy that we use when we think is not used in the creation or utilisation of the connection – much as some of the energy used in a light bulb is not used in the creation of light but instead creates heat. In the thought this extra energy may be in the form of heat or light or perhaps in some other form which would explain phenomena that we do not understand (or have not proven yet) such as telep