"There was a failure to recognize the deep problems in AI; for instance, those captured in Blocks World. The people building physical robots learned nothing"

Marvin Minsky's quote is describing the absence of understanding of the complexities of Artificial Intelligence (AI). He is recommending that the people who were building physical robots did not put in the time to comprehend the much deeper issues of AI, such as those discovered in Blocks World. Blocks World is an analytical environment utilized to test AI algorithms. Minsky is implying that individuals who were constructing physical robotics did not make the effort to comprehend the complexities of AI, and thus, did not learn anything from it. This quote is a reminder that AI is a complicated field and requires a deep understanding of the underlying concepts in order to succeed. It is very important to make the effort to comprehend the intricacies of AI in order to be able to develop effective robots.