PhD in DIM

Well here I am again, reclining gracefully on the sofa sharing my life with the world. Having just carefully packed away my wings and rolled up my blackbelt, it is now time to dust off my PhD in DIM. For those of you not familiar with this – think of it as the advanced form of DIY –do it myself. I am wrestling with the sticky problem of a knackered garden tap which needs replacing. Now in my innocence I had assumed that a tap is a tap is a tap-WRONG! There are taps with widgets, taps with doofers, taps with thingummyjigs etc etc etc. Do I know which one I need ? No not yet, but give me time.