Betrand meyer developed the programming language which is not type-safe because it violates the law of contravariance.

Eiffel programming

Explanation: Eiffel programming language was base on object-oriented pattern and developed by Betrand Meyer in 1986.This helps in creating the software modules that can be used again and is reliable as well.

This language was not considered as type safe because it could execute the operation on any particular object which is considered invalid on it.This language lacks about ensuring the program that are written are well defined or not.

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answer; fosslls and artifacts;