Science can be a combination of mistakes, foolishness and successes. At the end of it, it always lead to a breakthrough in the science world. If Eugen Steinach was successful, then the race for curing old age would have been solved a long time. If it were possible to control the increase in Parathyroid hormone as we grow older, we could as well start preventing the issue of osteoporosis as we grow, or what do you think?