Oh .. I’ve run my machine with the PF but without the basket (why is the shot running so fast?).
And the machine with the PF (and basket) but without the cup (oops, quick, put in that cup!).
And knocked over the basket after filling and tamping it (cr***!!).
Somehow I always remember to place the scale, as that is part of my setup routine.
Generally the “stuff” happens with the first shot of the day, particularly if I didn’t have a good sleep.