sideways flashes annoying to anyone else?

Every word is vital, every action a clue.
By the way are the flash sideways annoying anyone else, or is it just me? 

They seem like such a waste of time.

I want to know what is happening on the island, where is Claire? Not what would have happened in 2004.

I feel as though precious Lost time is being wasted, does anyone have a clue as to what the alternate timeline's purpose is.??

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