Probably not as silly a question as you think, maybe a bit loaded.
A Bid Landscape is a multidimensional histogram of performance statistics for a biddable entity in AdWords.
It consists of a series of performance estimates for each of a series of bids.
Bid Landscapes are retrieved either at the AdGroup or Criterion level.
Each Bid Landscape is expressed as a series of LandscapePoints :
https://developers.google.com/adwords/api/docs/reference/latest/DataService.BidLandscape.LandscapePoint
Each LandscapePoint shows you the estimated clicks, cost, marginalCPC, impressions, etc for a particular bid amount for the AdGroup or Criteria you have requested the BidLandscape for.
IMHO, this data is only really useful if you have conversion tracking which allows you to actually attribute real value to your clicks at the keyword level.