Knowledge and testing
Illusion
Misleading appearance
Extended note
Illusion shows why appearance cannot automatically be made into knowledge. Illusion does not abolish actuality; it shows that appearance must be tested, corrected, and traced against what is.
Limitations
Not the same as
- actuality
- lie
- fantasy alone
- all sensory experience
Related terms
Methodological relevance
When material may be illusory or misleading, the audit must distinguish what actually appeared, how it was interpreted, and what later control shows.
Sources and principal occurrence
Source note: T3 and Corrigible Realism use illusion as a reason for correction, not as a reason to reject actuality.
- T3 — Appearance and ObservationThe sustained theory document on appearance, registration, observation, interpretation, and inference.
- Corrigible RealismThe academic and philosophical position.
Correct and incorrect use
Correct use
“The image suggested proximity, but perspective produced an illusion.”
Incorrect or over-strong use
“Because illusions exist, we never reach actuality.”
Suggested citation
Suggested citationVikesland, M. A. A. (2026). “Illusion”. Røyndalism — Lexicon, content version 1.0.
APAVikesland, M. A. A. (2026). Illusion (version 1.0). Røyndalism. https://royndalisme.no/en/lexicon/illusion/
MLAVikesland, Martin A. A.. “Illusion.” Røyndalism, version 1.0, Vikesland Press, 2026, https://royndalisme.no/en/lexicon/illusion/.
ChicagoVikesland, Martin A. A.. “Illusion.” Røyndalism. version 1.0. Vikesland Press, 2026. https://royndalisme.no/en/lexicon/illusion/.
IEEEM. A. A. Vikesland, “Illusion,” Røyndalism, version 1.0, Vikesland Press, 2026. [Online]. Available: https://royndalisme.no/en/lexicon/illusion/
CSEVikesland MAA. 2026. Illusion. version 1.0. Røyndalism. Vikesland Press. Available from: https://royndalisme.no/en/lexicon/illusion/
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Revision note
- Document version
- 1.0
- First published
- 18 June 2026
First public edition.