Yet principle and past suggest that at some point when the gap between actual reality and the vision through the rose-coloured spectacles becomes very large, then the lenses splinter.
These waves are populated by a growing number of investors who out of desperation for real yield put on rose-coloured spectacles which filter out risks and magnify expected returns.
"We're at the point where economic data, no matter what comes out between now and next Tuesday, will be viewed through rose-coloured glasses, " said Andrew Baker, senior trader at Los Angeles firm Wedbush Morgan.