In terms of a "whoopsie" without guard rails: lost data because I was in a production database and didn't create a transaction. But, to be honest, I shouldn't h

In terms of a "whoopsie" without guard rails: lost data because I was in a production database and didn't create a transaction. But, to be honest, I shouldn't have even been able to do that in the first place. Otherwise, I spent too much of my early career focusing on learning application development tooling, and ignored database systems. Often, a fantastic distributed, networked application is right there in your stack. A lot of good information comes from getting to know how these pieces work, instead of treating them as "magic black boxes".