"And does the captain understand the level of our involvement?"

Could his human captain possibly understand the moral implications of what they were about to do?

Perhaps the captain simply didn't understand how much Spock still had to learn about emotion.

Then the captain of the ship talks to them but cannot understand their language.

But the captain could not understand why they were no longer industrious.

For a moment, the captain didn't understand what the admiral was getting at.

"This is not a thing to be taken lightly," he explained, just in case the captain didn't understand.

"Of course, part of the problem is that the captain didn't understand every word."

If his voice was less than steady, he only hoped the captain would understand.

He said to me, "I'm not sure the captain understands the seriousness of the situation."