The wall is the point, if you want to truly know the truth of something. I still believe there is no royal road. Taste isn’t the answer to why you would choose a bump allocator over a slab when designing a system. It is experience, wisdom, and the long hard road of trying yourself and failing. Taste comes after.
There is much joy in suffering when the result is knowing.
Too many people have tried to declare victory over software engineering prematurely and it shows.