It's Normally expected that if you implement IEquatable.Equals you will also override Object.Equals to be consistent. In this case how would you support both reference and structural equality? The generic tuple classes (Tuple, Tuple, Tuple, and so on) and the Array class provide explicit implementations of the IStructuralComparable interface. By https://c-object-kullan-m51616.dbblog.net/1544573/c-structuralcomparisons-nedir-hakkında-gerçekler-açığa