Using Infrared Radiation for Thing is Ridiculous

[goldfinder]

I keep seeing the use of infrared radiation (IR) as a method to detect treasure or buried objects long distance. IR is heat and heat does not penetrate more that a few inches into the ground. So it is useless as a THing tool since there will be nothing or close to nothing to distinguish between ambient soil temperature. rocks and other things would give false positives and the rockier the soil the less chance there is.

Now in an old house you might get some difference in something buried in the walls of the house but again, highly unlikely. A regular metal detector would do a better job.

I am an expert on IR as I worked with sensors that were used for military purposes so I know what I am talking about.
Goldfinder