Here's a short story:

As the number of possible tests for even simple software components is practically infinite, all software testing uses some strategy to select tests that are feasible for the available time and resources. As a result, software testing typically (but not exclusively) attempts to execute a program or application with the intent of finding software bugs (errors or other defects). The job of testing is an iterative process as when one bug is fixed, it can illuminate other, deeper bugs, or can even create new ones. 

Although testing can determine the correctness of software under the assumption of some specific hypotheses (see hierarchy of testing difficulty below), testing cannot identify all the defects within software. Instead, it furnishes a criticism or comparison that compares the state and behavior of the product against oracles—principles or mechanisms by which someone might recognize a problem. These oracles may include (but are not limited to) specifications, contracts, comparable products, past versions of the same product, inferences about intended or expected purpose, user or customer expectations, relevant standards, applicable laws, or other criteria. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What is infinite?
Guess: possible tests

Question: What do these tests find?
Guess: software bugs

Question: Once it's fixed is everything good to go?
Guess: no

Question: Why not?
Guess: it can illuminate or  create new ones

Question: Can testing identify everything?
Guess: no

Question: What did it do instead?
Guess: it furnishes a criticism

Question: Are contracts included in the oracles?
Guess: yes

Question: How many things were oracles?
Guess: more than eight

Question: What did software testing typically attempt to do?
Guess: execute a program

Now answer the following question in the same format.

Question: What type of process is the job?

iterative