Which preposition is right and which is wrong ?
1- We haven't been harnessing a lot of resources for the medical field.
2-We haven't been harnessing a lot of resources in the medical field.
Learn English – “For” VS “in” usage
grammaticality-in-contextmeaning-in-contextphrase-meaningprepositional-phrasesprepositions
Best Answer
"Resource" can take a complement with "for", specifying the purpose or target of the resource. So A resource for the medical field means a resource applied to the medical field, which doesn't make a lot of sense, and would probably be interpreted as A resource for certain unspecified activities in the medical field.
"Resource" does not take a complement with "in", so if you use an "in" phrase with it, it is an adjunct, with no special meaning attached to "in". If you say a resource in the medical field it means A resource for something unspecified in the medical field.
So in this case, there is no difference in meaning that I can find. But if the complement were something that the resource could be directly applied to (eg a resource for calculating the best graph) I think "in" would be strange, and imply that there was some (unspecified) part of the calculating that the resource helped with.