But these were crude models, probably from some masquerade supplier.

With this rather crude model of chemical reactions, we can return to our first question: why do only certain particular reactions occur in cells?

I worked out a crude model for setting up a current system which could link the disk of a black hole to the surroundings.

But on that lowest day I bad completed a crude model of my oddest invention.

Curious as to what made it work, he built a crude model of it in wood.

You expected a rather crude model and were surprised.

You are worshiping a crude economic model as if it were a holy writ.

Not a fully realized head, but something like a crude model of one, the features only half formed.

Yet crude models that merely monitor the volume of traffic have already paid remarkable dividends.

As a result, experiments have historically been compared to relatively crude models which are necessarily imperfect.