Here is a 2-paragraph summary for mathopen.com:
Astronomer David Kipping argues that exciting claims about discovering extraterrestrial life tend to fall apart once researchers look more closely at the evidence. Rather than chasing headlines, he believes the search for alien civilizations needs a stronger foundation in statistical reasoning and probability theory to make meaningful progress.
Kipping also makes the case that, given what the math and data currently show, it is entirely rational to conclude we might be alone in the universe. A more rigorous, numbers-driven approach to the Fermi paradox and the Drake equation could help scientists set realistic expectations and design better searches for life beyond Earth.