Walking is still the best form of short-distance transportation. It’s the most convenient, the cheapest, and… — Isaac Asimov

There is social and psychological inertia, as well as physical inertia.

Why, he wondered, did so many people spend their lives not trying to find answers to questions—not even thinking of questions to begin with? Was there anything more exciting in life than seeking answers?

“It is absolutely forbidden for the Imperial government to exercise any security control over the University or its members. There is complete freedom. Anything can be discussed here, anything can be said here.”

“What about violent crime?”

“Then the University authorities themselves handle it, with reason and care—and there are virtually no crimes of violence. The students and faculty appreciate their freedom and understand its terms. Too much rowdiness, the beginning of riot and bloodshed, and the government may feel it has the right to break the unwritten agreement and send in the troops. No one wants that, not even the government, so a delicate balance is maintained.”