Now that the world has successfully completed history’s fastest development of a new vaccine, you might be wondering why we don’t always just make one this fast. If the Pfizer and Moderna vaccines are safe and effective and the process to produce them didn’t cut any corners … well, why does it normally take around a decade to do something we just did in less than a year? The answer to that question is inextricably tied up with another question floating around: Once you get the vaccine, can you just go back to your normal life full of hugging people...