2 ms·

The evolutionary transition from single-celled to multicellular life has actually been repeatedly accomplished in vitro [1]. So highly unlikely to be a Great Fi

• sigmoid10 2y ago
  The study in the article suggests that these early multicellular organisms failed to take hold. So there was probably something needed that was missing. And it still took billions of years for complex live to emerge, whereas single celled life appeared almost immediately once the earth cooled down enough to have liquid water. Whether it took two billion years or 3.5 doesn't matter so much when you think of it as a potential filter.