Final answer:
In certain situations, it may not be possible to delete extraneous material. For instance, when dealing with classified information, the government may intervene and request specific material to be removed for national security. Additionally, there may be legal consequences for publishing false information or stretching the truth about public figures.
Step-by-step explanation:
There are situations when it may not be possible to delete extraneous material, such as in cases involving classified information. If a newspaper or media outlet obtains classified material or if a journalist is witness to classified information, the government may request certain material to be redacted or removed from the article. This is done to protect national security. Another example would be when publishing information about public figures, as there may be legal consequences for spreading false information or stretching the truth.