Despite this result, it is sometimes claimed by certain individuals (considered Cranks) that they have produced algorithms which uniformly compress data without loss.
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More engineer-minded cranks may claim to have invented a magic compression algorithm
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According to these authors, virtually universal characteristics of cranks include:
1. Cranks overestimate their own knowledge and ability, and underestimate that of acknowledged experts.
2. Cranks insist that their alleged discoveries are urgently important.
3. Cranks rarely if ever acknowledge any error, no matter how trivial.
4. Cranks love to talk about their own beliefs, often in inappropriate social situations, but they tend to be bad listeners, and often appear to be uninterested in anyone else's experience or opinions.