This camp advocates that electrons and other leptons could be primitive elements of spirit matter. This camp assumes that electrons themselves could be considered light in a broad definition, even though literally they are particles that are carried by electromagnetic energy. It is suggested that bosons, as gauge particles, may eventually be discovered to be effects, attributes, or artifacts generated by the presence of leptons and the heavier particles, and are not sufficient in themselves to be candidates for spirit matter. Therefore leptons would be the more likely candidate particles as spirit matter, falling under the definition of being fine enough to not be visible by human eyes but must be viewed by more sensitive "eyes".