Much later, in 1954, Einstein himself called his excursion …
Much later, in 1954, Einstein himself called his excursion into aeronautics a “youthful folly.” https://www.scientificamerican.com/article/no-one-can-explain-why-planes-stay-in-the-air/
Much later, in 1954, Einstein himself called his excursion into aeronautics a “youthful folly.” https://www.scientificamerican.com/article/no-one-can-explain-why-planes-stay-in-the-air/