The error target.exclusive

user: the script can change it: the error says what happened in the experiment’s names, and what to write instead.

Where MIME gives it, with what its message says happened and what its action says to do ({…} is filled in from the experiment):

• in mime/build/_plan.py:

  • what happened: {…} of {…} is an {…} and takes one delivery; {…} all deliver into it

  • what to do: keep one of them: attach one law that delivers into it, exp.attach(...)

Reading an error and reaching its full traceback: reading an error. Every code: the index.