PYTHON · NUMPY

What can a single energy total honestly claim?

Two allocation designs read within a few percent of each other on total joules. What can a wall meter conclude about their compute?

Find two architectures with nearly the same total energy and different splits, and say what a wall meter can conclude about them.

01Challenge

Two arms on this body land within a few percent of each other on total joules. Before you look at the split: can a meter at the wall tell you which one is the better design?

Predict firstTwo allocation designs read within a few percent of each other on total joules. What can a wall meter conclude about their compute?

02Model

There are four honest places to put an instrument on a robot, and they measure four different questions. At the wall you see what the building pays. Only a dedicated rail separates what the machine spent thinking from what it spent moving. That is not a detail of instrumentation: it decides which claims a measurement can support at all. A total is a real number, and there are conclusions it cannot reach no matter how carefully it was taken.

03Guided practice

Run the comparison. Find the two arms closest on total. Then look at what separates them and ask which of those a wall meter could have seen.

04Feedback

PASS WHEN You found two designs a wall meter would call the same, and named what it could not see.

If your run fails, check:

The cascade and the gain arm land within a few percent on total joules while differing by tens of joules in compute. A wall meter reads the sum and cannot attribute it.
Every plane is measuring correctly. The spread between them is not noise and not error, it is four different questions, and only a dedicated compute rail answers the one about architecture.
That is why an energy claim needs its plane attached. A figure without one is a real measurement of an unstated question, which is why a reviewer cannot use it.

05Retrieve & space

Name the four planes a robot's energy can be measured at, from the wall inward.
Which plane is required before an architecture claim about compute can be made?
Two designs read the same at the wall. What follows about their compute?

06Mastery & project

State any robot energy figure with its measurement plane attached, and say which claims that plane can and cannot support.

Take an energy figure from a recent robot-learning paper and determine which plane it could have used, and whether the paper says.