Deductive Reasoning [Part 2]

Note: The following article may be considered subjective. Read with consideration. 

Pieces of a Puzzle

Figure I

     Our last post was the introduction to our deduction notes. Perhaps it hardly seems irrelevant, considering the title of our blog-site. Here's the catch, though: deductive reasoning examples all involve the collection of individual pieces of information that are connected to the final assumption in the end. While we see Sherlock's mind processing in the show (Figure I), I would argue that they don't show the entire cognitive procedure -- that would be terribly complicated. 

     The following is an example of a deductive reasoning question:

Mary, Janette, and Sarah went out to eat on Saturday and Sunday. When they go out together, each of them orders either fish and chips or yorkshire pudding.

Janette has yorkshire pudding if Mary has fish and chips.

Either Mary or Sarah will have fish and chips, but they won't both order it.

Janette and Sarah will not both have yorkshire pudding. 

Who ate fish and chips on Saturday and yorkshire pudding on Sunday?

Figure II

     In the questions I have reviewed, there is always an introductory statement with background information, multiple points, and a question. The first two sections are gained through the observance of the subject(s), which can be done through the application of social psychology. Noticing behavioural patterns and using body language knowledge to attribute them to an understanding of the subject is key (Figure II). This may be the importance of social psychology and the reason why this blog will start uploading posts on deduction. Another reason is because, when someone thinks Sherlock, they think of the pipe, the hat, and his deductive reasoning.

     So, who can solve the example? Do you recognize the names?
For more fun, check out this book below. You'll find that the example was inspired by the first question in the book. I do not own this property, nor the media used in this post.

Summers, George J. Test Your Logic. New York: Courier Dover Publications, 1972.