in the Drake equation. These uncertainties, which often span multiple orders of magnitude, can be represented as probability distributions with long tails. Instead of getting a single estimate of the probability of life in our galaxy, they therefore obtained a distribution. They found that there is a high likelihood that we are alone in our galaxy or even alone in the entire observable universe, thus proposing a solution to the famous Fermi paradox, which asks why we do not see signs of intelligent life in the night sky. In 2018, in response to a question on Physics Stack Exchange, Sandberg published a paper on arxiv.org entitled "Blueberry Earth", which answered the question, "What if the entire Earth was instantaneously replaced with an equal volume of closely packed, but uncompressed blueberries?" The paper got a large amount of news coverage on Slate, The Atlantic, Popular Mechanics, Atlas Obscura, The Chronicle of Higher Education, Forbes, Live Science, Physics World, New Scientist, and many blogs and podcasts. See also Future of Humanity Institute, University of Oxford Global catastrophic risks Transhumanism Longtermism References External links Academic bio 'Andart' Personal blog (to 11 August 2014) 'Andart2' personal blog (from August 2014) Anders' Main Page Transhuman Resources 1972 births Living people Artificial intelligence ethicists Cryonicists People associated with effective altruism Stockholm University alumni Swedish computer scientists Swedish transhumanists People from Solna Municipality