INQUIRING MINDS.

The article discusses various letters and comments from readers of Mechanical Engineering. One reader raises concerns about the shortage of skilled workers needed to build nuclear plants and questions how these plants can be constructed without the necessary welding expertise. Another reader points out a historical example of scientific consensus being incorrect, emphasizing the importance of considering alternative perspectives. Lastly, a reader criticizes an article for lacking technical depth and accuracy in its discussion of thermodynamic principles. [Extracted from the article]