Since its debut in the March 1942 issue of Astounding Science Fiction magazine, "Runaround" has been reprinted in numerous collections and anthologies:
The Internet Archive hosts fully legal digital loans of Astounding Science-Fiction and Asimov's anthologies, allowing you to read the text exactly as it appeared in print. Conclusion isaac asimov runaround pdf
By securing a legitimate copy, you ensure that Asimov’s greatest thought experiment—a robot running in circles on Mercury because he cares too much about his orders—remains available for the next generation of dreamers and engineers. Since its debut in the March 1942 issue
The selenium pool contains unforeseen volcanic gases that create a corrosive environment. This environment threatens to destroy Speedy. Because he is an expensive, advanced prototype, his Third Law (self-preservation) was programmed to be exceptionally strong. This environment threatens to destroy Speedy
A robot must obey orders given it by human beings except where such orders would conflict with the First Law.
Donovan and Powell quickly realize that Speedy isn't broken; he is trapped in an existential logical loop caused by a conflict between the Second and Third Laws.