What is real? - Questions

The questions I compiled below covered parts of some branches in philosophy - epistemology and metaphysics.

What is real?

How do you know it is real?

How do you define real?

Are the five senses reliable?

Are all experiences real?

What is the nature of reality (Idealism vs Realism)?

How do know human senses are not deceiving?

Do you think your dreams are real?

Is an idea real?

If you can see/hear/touch/smell/taste something that other people can't, is it still real?

Can there be unreal?

If something/someone is unreal, how do/can you know? (it's unreal!)

Does real mean true?

If I tell you that I just smashed your precious automobile in the garage or your favorite plant in your garden, you took my word and ran out to check for damage, was "smashed car or plant" real?

Further Readings

1. Zhuangzi (book, chapter 2): The Butterfly Dream [莊子‧齊物論: 莊周夢蝶]
2. Spinoza: http://en.wikipedia.org/wiki/Philosophy_of_Spinoza
3. Spinoza: http://plato.stanford.edu/entries/spinoza/
4. Descartes: http://www.iep.utm.edu/descarte/
5. Descartes: http://www.radicalacademy.com/phildescartes1.htm