Student’s Name: _____________________Chapter: _______Date: ____________

Class Preparation Guide*

*Questions derived from Elder and Paul’s “The aspiring thinker’s guide to critical thinking” – 2009 – pp. 38 & 39.

The main purpose of this chapter is to educate people on the various types of security locks and the importance of each. The author has achieved this through describing the internal mechanisms of each type of security lock in detail, and distinguishing between the combinations used to open each. The author tries to inform people on the effectiveness of different types of locks. Moreover, he describes the role played by locks in providing security. The key question at the heart of this chapter is the problem of insecurity. Throughout the chapter, the author defends his description of the designs of various keys and combinations with the impact they have on people’s safety and security. It is evident that the author pays most attention to security since he offers simple alternatives for obtaining efficient locks for human protection. He also outlines the main purpose served by locks as security measures. The most important information in this chapter is the design of different locking systems. This includes the design of various types of keys and the internal mechanisms in locks. The reason for different types of locks is the different levels of security required. Another reason for changing the orientation of locking combinations is to improve the efficiency, due to the development of technology. His description of lever, pin and wafer locks shows the differences in functionality of the systems. The main inferences in this chapter are the cost and level of security offered by locking systems and keys. The costs vary depending on the material used to make a lock or key. Moreover, costs vary depending on the level of technology used to develop a combination. The security that the lock is supposed to offer depends on the contents of the area in need of protection. It also depends on where the lock is used, for example, doors, windows or gates. The key concept(s) we need to understand in this chapter is the construction and development of locking systems. There are many types of locking systems, for example, access control. This is a means of securing an area through limiting movement of unauthorized people within the premises. Effective locking systems offer good security. The development of technology enhances locking systems, increasing security. A good quality key should be able to interlock with the tumbler mechanisms easily. Tumbler mechanisms are locking systems that contain movable components. These components are known as tumblers. The main assumptions underlying the author’s thinking are, for instance, he has not considered the possibility of security breaching by locksmiths. Locksmiths are people who specialize in the construction of the hardware part of a locking system. This includes key cutting and tumbler alignment. Most locks that are not automated with passwords are easy to alter through picking. Picking is the opening of a lock without using the correct or required mechanism. Locksmiths usually know the mechanisms of the locks they make. This implies that apart from the user, they have full access to the system. This makes the system insecure. a. If people take seriously what this author is saying, some important implications are positive consequences. People’s physical security will improve because their households and valuable items will be protected. Furthermore, they will be able to choose appropriate locking systems for themselves. The rate of crime will also reduce because the level of security will have improved. People will also be able to develop their own locking systems and this will reduce the costs for purchasing locks.

7b. If we fail to accept what the author is saying, some important implications are negative impacts. This is because people will be physically vulnerable to danger, due to the level of insecurity. Additionally, they will also suffer from the expenses of acquiring proper locking systems. This is because they will not be able to develop and repair their own locks in case of damage. Furthermore, they will also suffer due to frustration due to key or password misplacement since they have no knowledge of how to handle such situations.

Questions Raised by the Chapter for Class Discussion—Three Required for each Chapter:(Items not addressed in the text of the work or not covered in assignments that you would like to discuss in class.)

Is the knowledge gained from the chapter enough for students to generate their own locks? With the rapid development of technology, is it correct to say that padlocks will be phased out entirely in the near future? What are the effects of automated locking systems on human labor?

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