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soereiies in chaos or sysrems in disorder Today
superhighways and over-panes in Masaaehuseiis alone
need some «)0 billion dollar. io repair, and ihe
eullaprrng rewer sysierns oi London and New York
some in unions. Neiiner Masazhmr London, nor
New liorlr can raise rhis money, which shows ihai an
unlhinkills hasrorreai developmeni smegy ran cripple
o iuiure soereiy Today-s luxuries are knmurmws
disasiers.
Wm
Any syslunl or organism can Imam onlyihaiouamny
ullmmmlchunmumwuammAny
moored iriool beyond lhai poinuhmws ihe sysiom oi
orpsrruhinlodisordnrimwolynlzmsmioeha
ioim oi chronic polIIAKIm
Bolll in over- and undersuppiy oi resoureos have
much ihe same em eroepi ihai oversupply has more
groiesoue results in liie symlls mm undersuppiy. To .
degiee, undersuppiy an be eoped wrih by Minced
growih and a wider spasirrg or dispersal olorgamm,
huloyersuppiyoia resauree ean cause iniiaied growth,
crowding, snd sociopaihy in serial organisms. in
people, boih gross uyere and under-nurriiior. are
common» :ihreal resoune managerneni is needed io
oalairse our ihe paihologies oi ianrlne and obesriy.
1.5
YIELDS
Yreids an be ihooghr oi in irnrnediare, palpable, and
mnieriai ways, and arei iy wily measured as
l. PRODUCT YIELD: The sum oi priinary and
derived produeii available iron, or surplus ro, iire
sysiein Some oi ihese are inu'iluir ior preeede duly),
oihers are eieaied by design.
2 ENEch YIELD' The suirr oi eonserved, siored.
and generaied energy surplus io ihe aysoerri again ham
uriiinsie and ihose ereaied by design.
Impalpmble yields are rhose reiaied io healrh and
nubirion, seorriry, and a sarisimory sodal ooniein and
iriesiyie Niri surprisingly, ii is ihe ieareh ior iheae
invisible yields ihar ml oiien dnyes people in seek
good design or io ialre up hie on ihe land, ior “le
does ii oenefii a man r: he gains ihe whole world and
Inns his souii- Thus, we see ihe invrsibie yields in
ierans nlvlln: and (Huge This goyenrs our eoneepi oi
needs and seis ihe iuniis oi "almigh, Here, we see an
eihroiibasrs ara viul eomponenioiyieiol.
Al||wu5h all sysiems have a naiurai or base yield
depending on iheir produeirvriy, our eonsern in
perm-whine is ihai ihis esseniiai bare yield is
susrrirrabie. Sever-i iaeuirs now openie lo reduoe ihe
yield oi natural sysiems. lu ihe simplesi iorm, ihis rs
ihe overuse oi energy in degeneraiiye iyaiems due ro
ihe uanse aypflulion oi iossii iuel energy, "Pmmnlng
by unproduerave nae" rs observable and Widespread
15
Thus we musr eoneenrrsie on produeirye use, whieh
implies ihai ihe energy used is ruined inro biologxal
growiir and held as basis iryrng maienai in the global
eeosysrem Unused, wasred, or irivoiousiy used
resources are energies running wild, which ereaies
ehaos, desieoya basir resourees, end eyeniuaiiy
sooirsius ail yield or surplus
in design m5, we on. rind yields iroor ihese living
popularrons or resourpes whirh are ihe sioeio oi ihe
biologisi iihe so-ralled sian ' g errrpl or lrorn
none ying aysiems sueh as ihe eiimaiie eiemenis,
chemical energy, and mlchine ieehnoiogy. There is
energy siored by exiinei liie as seal, on, and gas;
energy ieii over irom ihe ionnauori oi ihe eanh as
geoiiierrnai energy; iidesi and eleeirornagnerie nnd
grayiiaironai lmca,CoIiIllculd solar energies impinge
on ihe esnh, 2nd liie inoereepis ehese iiowa in male
rheur available ior liie iorun.
in our small pan oi ihe sysiem (ihe design siiei our
wark is io m, dim, eonserye, and sonven io useiui
ior-rrrs ihose energies ihaieaui on, or pass ihrough, ihe
siie The ioiai suan at our siraiegy, in rerurs oi surplus
energy useiully siored, is ihe sysierrr yreii oi drsigri
Syslom yield is m rum Mal oi surplus energy
plodooed by, siorori. conserved. mused. ul rammed
by me design. snowy is in surplus onoo ihe sysism
lisen his lv-Ilabll all is noodsiorgrosnh.
Wufllorl, 1M marnienanoo
Some biologisis may deiine yreid or produslion in
more narrow ierrns, aeeepimg ihai a ioresi, lake, or
crop has a irnrie upper lirnii oi surplus due to suosrraie
eondillens and ryiiiable energy We do nor hnye io
Acre-pt ihis, as ii is a passive approrrh. inapplieable ro
zckiv: and eonseious design or icliv: managemeni
using, ior example, ieniliaers, windbreaks, or seieeied
spedess
Even more narrowly deirned is ihe yield oi
agrieuiiurai eeononusrs, who regard a single produei
ipeaehes/irai as ihe yield ll may be Ihisapvpmuh ioeli
iiseii whreh is she one iimii iii yre
A true aeeouniing oi yield lakes inin eonsideraiion
boih upsrream eusis ienerpyi and downsireaur eesis
(hullhl The 'prmduu yield" IIuy ereaie problems oi
poiiuirein and soil mineral loss, and eosi more thn ii
esn repiase
The very eonrepi oi surplus yield supposes eiiher
ilriw ehrough or groweh wiihin one syimn Coal and
rock do rroi have yield in ehis sense; ihey have a hnire
or limried produei On|y lite and How ean yield
ponirnuaiiy, or as long as ihey persrsr 'flius no energy
sioels oi any aysiem are ihe ilows and lives wiihrn )L
The ilow may exisi wiflmui iiie ins on ihe moon),
where only ieehnoiogy oar. irriervene lo omain a yield,
but on esnh ar ieasr, irle is ihe mkrvcnin siraiegy ior
eapiuring ilow and pmudng yield And reehneriogy
depends on ihe eoniinuaiiorr oi hie, noi ihe opposire