Phakathi kowe-1900-2006, amaphulo okuchasana noluntu angenabundlobongela aphumelela kabini kwimikhankaso enobundlobongela. U-Erica uzakuthetha ngophando lwakhe malunga nembali ebabazekayo yokuchasa abantu kwinkulungwane yama-20 kwaye axoxe ngesithembiso somzabalazo ongaxhobanga kwinkulungwane yama-21. Uza kugxila koko kubizwa ngokuba “ngumthetho we-3.5%” —umbono wokuba akukho rhulumente unokumelana nomceli mngeni we-3.5% yabemi ngaphandle kokulungiselela intshukumo okanye (kwiimeko ezigabadeleyo) ukuwohloka. Ukongeza ekuchazeni ukuba kutheni ukunganyanzeleki ukuba kusebenze kakuhle, uya kuthi abelane ngezifundo ezithile azifundileyo malunga nokuba kutheni ngamanye amaxesha zisilela.