[fpc-pascal] why constructor of TObject is NOT virtual but destructor is?

[Xiangrong Fang]

Hi All,

I would like to know the benefit of making constructor / destructor
virtual.  As described here:

http://c2.com/cgi/wiki?VirtualConstructor

The benefit of virtual constructor seems related to "class reference". As
far as I understand, it is related to how LCL works, like:

CreateComponent(AComponent: TComponentClass);

My questions are:

1) if the above understanding is correct AND COMPLETE, why the constructor
of TObject is not virtual? What problem will appear IF we make it virtual?

2) What is the purpose of making destructor of TObject virtual?

Thanks!

Xiangrong
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