High Tech. Equipment vs. Oldies but Goodies

I've seen all the popular and some not so popular ghost investigation shows on TV and the internet. To me the reliance on High Tech equipment to see if there is a ghost present is a bit on the overkill side.
I'm of the school where if I can't see it or hear it or if it doesn't touch me or throw something at me it doesn't exist. If you have to squint to see a ghost in a picture or video or tweak audio to the point where you can hear it, then that's not good enough for me. What ever happened to the days before electricity? What did they use to find a ghost? Hey people long ago knew ghosts existed and never had high tech stuff to confirm a ghostly presence. What they used were dowsing rods, candles, pendulums, powers, teas, table tipping, a persons body ect...
I'd like to hear back on your take of all the high tech stuff. Is it necessary or should we start getting back to the basics.