I would add to that the fact that, if we are happy to be caught in flagrante delicto in a picturesque setting, there would be something almost humiliating about being caught somewhere as ugly as that.

Thus the gradation of the direct object provides an explanation for the unattestability of [ +derived / -specific ] direct objects in the language.

This world is full of trouble! There can be no doubt of that. Nothing but bother and perplexation!

Normal untransplanted marrow was used as a control to ensure the quality of the stroma and the comparability of the experiments at different times.