Floating references

Some years ago I read about floating references as described in 


Of course that makes sense.

Newly created objects get ref count 1, but are floating. If they get
put into a container element, floating ref is converted to ordinary
ref, and ref count stays at 1.

But I was wondering, why for newly created objects ref count is not
just zero, so when the element is put into a container it is just
increased to one.

So there must be a reason why it can not work this way. Of course when
ref count drops to zero the element is deleted. But when a newly
created element just has ref count zero, where is the problem?

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