hrstc r hrstc tchnq (prblm slvng, mntl shrtct, rl f thmb) s ny pprch t prblm slvng tht mplys prgmtc mthd tht s nt flly ptmzd, prfctd, r rtnlzd, bt s nvrthlss "gd ngh" s n pprxmtn r ttrbt sbstttn. Whr fndng n ptml sltn s mpssbl r mprctcl, hrstc mthds cn b sd t spd p th prcss f fndng stsfctry sltn. Hrstcs cn b mntl shrtcts tht s th cgntv ld f mkng dcsn.
Hrstc rsnng s ftn bsd n ndctn, r n nlgy ... ndctn s th prcss f dscvrng gnrl lws ... ndctn trs t fnd rglrty nd chrnc ... ts mst cnspcs nstrmnts r gnrlztn, spclztn, nlgy. [...] Hrstc dscsss hmn bhvr n th fc f prblms [... tht hv bn] prsrvd n th wsdm f prvrbs.