To do this is necessary to invite all sober explorers of the Crop Circles phenomenon that sometimes perform by themselves an experiment known as blank test, or blind experiment (also "zero correction").
Ili kufanya hivi ni Muhimu kukaribisha wote Wapelelezi kiasi ya uzushi mazao duru Kwamba wakati mwingine kwa wenyewe Kufanya majaribio inayojulikana kama mtihani tupu, au majaribio ya vipofu (pia "sifuri kusahihisha").