The main missing element is the mind's ability to observe itself and reflect on its own thinking process.

But the blind hope that somehow there would be an answer to the problem of the missing element kept him going.

It seemed to him there was a missing element, a special key.

The missing elements in many of my works are more relevant than what is there to be experienced.

Now, there seems to be a missing element in this equation.

Yet he could not rest until the missing element was satisfied.

The missing element of the battery can be added before use in several ways.

The only missing elements were government representatives from the host nation, Japan.

That was the big missing element we have seen in this investigation.

Defense lawyers have asked vigorous questions about the missing elements in court.