We didn't have great chemistry, so when the lease ended and came time for a new tenant, we parted ways.

My goal for this post is to connect with other people and form symbiotic professional relationships if the professional chemistry is right.

Or creating medicines without any chemistry knowledge?

They don't work with everyone because sometimes the chemistry is not right between both parties, this is highly respectable in my books because it shows they aren't only looking out for their own interest but also the investors.

I have read dozens of books on gardening, farming, composting, soil science and plant chemistry.

I've used cheat sheets to study for (and pass) everything from middle school Spanish to organic chemistry.

This is not rocket science or a chemistry project where the values must be precise.

My license has been inactive all this time so I could pursue a chemistry degree.

You want the trauma and neuro surgeons with 30 years experience that went to Johns Hopkins etc over the one just out of the medical school in Grenada. 

You’ll also need to consider whether the tenants will get along with each other—living with multiple people requires a certain degree of “chemistry”, mutual respect, and consideration, and if the tenants are at odds with each other, nobody’s happy.