(fragment, draft)

Y. B. Karasik,
Thoughts Guiding Systems Corp.,
Ottawa, Canada.

Copyright ©2011 Y. B. Karasik

During 1973-74 school year at AzOIIT, Altshuller gave us an assignment: solve by ARIZ-71v the following problem:

We were given handouts with "Analytical" part of ARIZ-71v which consisted of the following steps:

Here is how I executed the steps:

No solution had been seen from here but I continued (not by ARIZ though). I imagined the external medium between glass and paper as a layer of a material and analysed the situation anew. Paper did not touch glass anymore. Thus, there was no rubbing between them. Paper rubbed just the layer of external medium. But if they are made homogeneous then no charges would accumulate and no sticking take place. It was a solution: make external medium of the same material as tracing paper. Put clean tracing paper on the glass and slide tracing paper with an image on it. That was the answer which Altshuller wanted us to find. Unfortunately, ARIZ-71v alone was not enough for this.

How could the afore mentioned informal thinking be formalized and incorporated into ARIZ ? First, additional steps are required before formulating a contradiction. These steps have to find the root causes of the unwanted effect. In our case they are these:

  1. I) paper and glass touch each other;
  2. II) paper and glass move relative each other;
  3. III) paper and glass are heterogeneous materials;
Only presence of all three causes makes paper and glass to polarize and stick to each other. Thus negation of any of them would solve the problem.

Such a negation may come at a cost or seem to be impossible at all. In this case a contradiction has to be formulated and resolved.

Thus, we arrive at a completely new ARIZ-2011a: