Adrian Searle find much to like at this year’s Venice Biennale, but there’s too much to get your head around. “The Venice Biennale is filled with nullities and profundities, the silly and the serious. Always, there is too much to see, things to forget and things that surprise and confuse. Confusion is good, but there’s too much of it, even though this is a smaller, better biennale than the previous two editions.”