?? stuff allen knutson hinted at about extra dot buildings .... also such stuff gleaned from brown and from pressley and segal .... ???? "morse theory" .... ???? try to connect with stuff woolf talks about ... "lefschetz hyperplane theorem" .... and morse theory .... ???? generic and not-so-generic hyperplanes to given subvariety ..... ??? ..... ........ ????? ...... .....

??? cohomology of flag variety ....

??? cohomology and / or intersection co/homology of singular schubert variety .... ??? ....

???? ......

?? morse theory as generally indication of "cobordism" concept .... ??? ..... ?? case of "singular morse theory" ... ??? ...