Wet Finger in The Air

Where were we, ah I remember, the dawn of estimating. Of course sticking your finger in the air could not continue as the defacto standard.

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  Have you noticed how Latin is used to say very unpleasant things or downright lies.. how many of you know Latin... oh, as many as that.

Anyway a "defacto" standard is no standard at all.

The next logical step was to wet the finger, not with water, but with experience! So, now we have WFITA!