# The issue with applying Standard 1.2.2 on step 1.7 of ARIZ-85v

### Y. B. Karasik, Thoughts Guiding Systems Corp., Ottawa, Canada. e-mail:karasik@sympatico.ca

Consider the instance of a step-by-step execution of ARIZ-85v on the example of the problem of transporting slag (see http://www.altshuller.ru/triz/ariz85v-p1.asp for details). Specifically consider steps 1.6 and 1.7.

Step 1.6:

• a) Given slag and "no-cover"
• b) "No-cover" does not need to be removed and, hence, does not cause a delay in pouring slag out. But "no-cover" also does not preclude the top portion of slag from solidifying into crust.
• c) One has to find such an X element which would both cause no delay in pouring slag out and preclude crust from forming.

Then on Step 1.7 it is said that the problem is easily solved by applying Standard Solution 1.2.2. The Standard Solution says that the sought for X element could be a mixture (or a combination) of the elements identified on Step 1.6. In this case it is a mixture of slag and "no-cover", i.e. a mixture of slag with nothing. Would not the result be slag again ?

The example does not answer what the result of mixture of something with nothing could be. It only says that although the problem is easily solved by the Standard, let's skip its application and proceed with search for X-element by the algorithm. So, let's skip it, as in fact it does not provide any clue.

The next step 2.1 says that the space previously occupied by the cover is now empty. But Step 2.3 already asserts that "no-cover" is air in this empty space. How and why the empty space turned into air is not explained. It is considered to be self-evident. But it is not. Does empty space always turns into air ? Not at all.

To bridge the gap in the logic of the algorithm I propose the following meta-algorithm for steps 1.6 through 2.3:

• The vacant space of "no-element" might be occupied by adjacent elements due to the laws of nature. Specifically, if the element turned into "no-element" was adjacent to gas or fluid the vacant space could be filled in by the gas or fluid. In this case the "no-element" turns into the volume of gas or fluid that filled in this vacant space.
• Please note that if it is fluid that was adjacent to the removed element, and the fluid was below the element, then the fluid cannot fill in the vacant space. Hence, in this case "no-element" is an empty space indeed, or nothing.