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Q: 

Using blocks in iOS4 and backwards compatibility

Hello All -

If I write code in iOS SDK 4.1 and I use block notation, will it still run on an iOS 3.0 iPhone? I am suspecting not, but wanted confirmation on this.

On another tip -

I am a little confused about why people use blocks at all. To my (ignorant) mind, it seems like a new syntax that doesn't really allow one to do anything they couldn't do before. Furthermore, that new syntax seems far harder to read, and does not convey the level of meaning that pre-block Objective C code did? Does anyone have an opinion on this?

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