**: By varying the angle of the train, this might give a more progressive display of change.
+
Ideally, the source for the strain display algorithm could be coded to facilitate hacking by interested learners. By this means, learners could substitute icon graphics and the algorithm formulas to create alternate displays and to experiment with their learning companion.
=== Distracting ===
=== Distracting ===
* To Learners
* To Learners
* To developers who should be fixing the faults more intrinsically
* To developers who should be fixing the faults more intrinsically