stranger on a park bench.

    Micructure of tring perspective: “terotic string consists of a closed string t ypes ofvibrations, clockerclocked differently. tions live in a ten-dimensional space. terclocky-six-dimensional space, of  inKaluza’s original five-dimensional, tified by being o a circle.)” And so it goes, for some 350 pages.

    String tessurfaces knoo top on t of us must get off.

    ence from times, explaining to a generalaudience: “tic process begins far in te past  emptybranes sitting parallel to eacum fluctuation in tant past and ted apart.” No arguing . No understanding it eitic, incidentally, comes from tion.”

    Matters in pc, as Paul Davies noted in Nature, it is“almost impossible for tist to discriminate betimately rig.” tion came interestingly to a iousdensity involving sucs as “imaginary time” and tincondition,” and purporting to describe t  o be unkno predated ts properties).

    Almost at once ted debate among ps as to ’s clearly more or less completenonsense,” Columbia University p Peter oit told times, “but t doesn’t mucinguis from a lot of t of terature.”

    Karl Popper,  t be an ultimate t, ration may require a furtion, producing “an infinite cal principles.” A rival possibility is t sucunately,” es einberg in Dreams of a Final tseem to be coming to tellectual resources.”

    Almost certainly t s of t, and almostcertainly ts  of us.

    s in tietury o tronomers ing an incompletenessof understanding in t large.

    met E