writeblocking and readblocking are so essential

and they can be done so many way

particularly for myself, sometimes I pass paths to them, and other times I just have one path to list

I also would like to get an error if I use system.readBlocking

I had a script calling a query, no error came up. I was stumped for hours.

I needed system.tag.readBlocking

I needed [0].value on the end