Philosophy of Computer Science: Naming

For a very long time, western culture has had a strong undercurrent about naming. Conceptually, it starts with the recognition that the ability to name a thing gives you power over it. This is reflected in many deep and ancient cultural mythologies.

The creation story in the Bible begins with:

In the beginning,…the earth was a formless void…. Then God said: Let there be light. God called the light Day, and the darkness he called Night.

So God is able to create the Earth with only his Word, and give life to mankind with only his breath. This power is nearly transferred to Adam, when he is given the task of naming all the plants and animals. Only mankind is given this linguistic power.

Jewish mythology picks up on this issue with the story of the Golem.

In many tales the Golem is inscribed with magic or religious words that keep it animated. Writing one of the names of God on its forehead, a slip of paper in its mouth, or inscribed on its body, or writing the word Emet (אמת, “truth” in the Hebrew language) on its forehead are examples of such words. By erasing the first letter aleph in Emet to form Met (מת, “dead” in Hebrew, when the aleph letter א is cancelled) the golem could be deactivated.

Jewish culture continues this tradition with the Kabbalah’s search for the True Name of God. Other cultures also demonstrate this idea. In witchcraft, a demon is both summoned and controlled by speaking its name. In the Hindu tradition AUM is the sacred word that encompasses everything, and is the sole syllable upon which focus is kept during meditation. The idea is also reflected in more modern works, as clearly expressed in Ursula LeGuin’s A Wizard of Earthsea:

Ged sighed sometimes, but he did not complain. He saw that in this dusty and fathomless matter of learning the true name of each place, thing, and being, the power he wanted lay like a jewel at the bottom of a dry well. For magic consists in this, the true naming of a thing.

Or the so recently popular, Harry Potter, where Dumbledore advises Harry:

Call him Voldemort, Harry. Always use the proper name for things. Fear of a name increases fear of the thing itself.” (PS17)

But how does this relate to Computer Science? Being a very textual discipline, we have many conventions that relate to naming. In Computer Science, we have the ability to create virtual worlds, and thus we need systems of naming the objects within those worlds. At the Language level we see a focus on naming conventions:

• Hungarian notation, in which variables have a prefix that describes their type, such as strName for a string, or pX for a pointer to X.
• Fortran, which had an implicit typing scheme, where any names beginning with I, J, K, L, M, N were always integer and the rest were reals.
• The Ruby on Rails framework, which has the ability to automatically map a model named “Person” to the “people” table in the database just by name inspection.

But naming actually turn out to be a much deeper issue than these linguistic examples show. In the Distributed Systems world, we have a large focus on naming, for a remote resource can only be accessed through its name, in what’s called name resolution. The easiest example to pick on here, is DNS, the system that allows a person to reference a remote computer by using an easy to remember domain (such as www.example.com) instead of a hard to remember physical address (such as 127.0.01). We can also identify a confluence of two separate concepts: The name of a machine can be used to locate it. This allows machines to operate with the previous cultural ‘power of naming’, knowing a machines name gives one access to that machine.

Since my research focuses on computer security, this duality between names and locations can be really critical. For example, there is a model for building secure software, called the object capabilities model, that not only identifies this power of naming, but actually explicitly states it as an axiom of the model:

• Objects (actors) can interact only by sending messages to unforgeable addresses.
• An object acquires knowledge of other objects in one of two ways:
  1. It is created with addresses that it receives from its creator
  2. It receives a message with an address to another object.

So, the security of the system is brought down to names. Communication and therefore power over other objects can only be obtained by learning their true names, which must be kept secret (unforgeable). For if a malicious object were able to easily guess the names of other objects in the system, it could quickly wreak havoc.

As such systems work their way into our daily lives, our personal names (read: personal identification) have also become much more important recently, as anyone that has been a victim of identity theft can attest. But this is an issue I won’t go into here. There are also other cultural impacts, for names change the way we think about each other.