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In page Lincos language:

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Some researchers have explored the similar issues in communicating with intelligent animals such as cetaceans.[citation needed] Lincos messages (even if sent by pulses of sound rather than radio) are complex and need to reach the most patient, logically oriented members of the target species. A far simpler approach aimed at average members of a species can cover numbers, >, <, =, +, -, and time.[citation needed]