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I feel like copy be default makes box a weird paradigm in C++.

In Rust you will love unless you write `Clone`.

I consider C++ a copy-by-default language (and pointer/ref being the necessary evil which breaks this great default).

In Rust, it's move by default and you need an explicit .clone()

In C++, it's copy by default and you need an explicit std::move()

A copy of a pointer is a duplicate pointer to the same location by C++'s rules.