This work is based on quantum modification of the general relativity, which includes effects of production /absorption of gravitons by the vacuum. It turns out, that gravitons created and continued to influence the universe, including people. The theory (without fitting parameters) is in good quantitative agreement with cosmological observations. In this theory we got an interface between gravitons and ordinary matter, which very likely exist not only in cosmos, but everywhere, including our body and, especially, our brain. Subjective experiences are considered as a manifestation of that interface. This opens a possibility of a "communication" with gravitons. Probable applications of these ideas include health (brain stimulation), communication, computational capabilities and energy resources. Social consequences of these ideas can be comparable with the effects of invention and application of electricity.