In research paper I use the following two sentences:
However, this is too optimistic definition since the allowable range of perturbations is restricted to diagonal matrices.
However, this definition is too optimistic because it does not allow independent loop gain changes.
Even though, they are in two different paragraphs, they sound similar and repetitive.
Is it possible to change two words "too optimistic" in the first sentence without changing the meaning of the sentence? Note: I cannot use word "unrealistic".