I would say the most “realistic” (still takes luck) is to learn or know highly marketable skills in computer science or something highly technical.

To answer your question generally I would say that you should select areas where there is diverse employment and you can future proof things a bit by ensuring that some amount of the employment is in industries like technology and life sciences.

The origin of the virus has been proven to come from UNC Chapel Hill BSL lab, documented by PhD Ralph Baric in 2015 in science journal, funded by our Federal Government the NIH (National Institute of Health) and sold to the Communist Chinese in Wuhan China BSL4 lab, where it was weaponized with SARs, HIV, and MERS into a Coronavirus, which was set up and operated by a Harvard lab professor, then released in Wuhan.https://www.the-scientist.com/news-opinion/lab-made-coronavirus-triggers-debate-34502This is a synthetic crisis designed to bring down the USA & markets before the re-election of Trump. 

Law isn't Rocket Science.

Don’t underestimate medical science and their ability to come out with a drug.

Though, I think establishing relationships and building rapport is more of an art than an exact science. 

It’s not as easy as setting up a site though and getting leads right away However it’s not rocket science and can easily be thought out to be effective.

Searching and examining title is as much an art as a science and should only be done by those experienced in it and willing and able to absorb the loss if a mistake is made. 

out of the whole S&P 500, here are the companies that had a return >0% in the last month (as of friday's close): Cabot Oil & Gas Corp Clorox Company Gilead Sciences Inc General Mills Regeneron Pharmaceuticals Take-Two Interacti Digital Realty Trust Kroger Company Campbell Soup Company Marketaxess Holdings

Not rocket science, the next crash will begin the night of the presidential election when it’s deep enough into the night to predict a democrat winning