Altshuller extracted from over 1,500,000 world-wide patents these 39 standard technical characteristics that cause conflict. These are called the 39 Engineering Parameters shown in Table 2. Find the contradicting engineering principles. First find the principle that needs to be changed. Then find the principle that is an undesirable secondary effect. State the standard technical conflict.
Example. The standard engineering parameter that has to be changed to make
the can wall thinner is "#4, length of a nonmoving object." In TRIZ,
these standard engineering principles can be quite general. Here,
"length" can refer to any linear dimension such as length, width,
height, diameter, etc. If we make the can wall thinner, stacking-load weight
will decrease. The standard engineering parameter that is in conflict is
The standard technical conflict is: the more we improve the standard engineering parameter "length of a nonmoving object," the more the standard engineering parameter "stress" becomes worse.
Table 2. The 39 Engineering Parameters