"We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces"

In this quote, Carl Sagan is revealing his concern about the absence of understanding and knowledge about science and technology in society. He thinks that this is a dangerous circumstance that might result in dreadful repercussions. Sagan recommends that while we may be able to neglect the problem for a short time period, eventually the mix of ignorance and power will have extreme repercussions. This could be translated as a caution against the prospective misuse or mishandling of scientific developments and the capacity for disastrous results. Sagan's words act as a suggestion of the importance of education and responsible use of science and technology in order to prevent possible catastrophes.