 This legal presumption is often the basis of why right of way acquisition procedures are set up the way they are.So an appraiser's entire practice may be the result of a legal presumption.A legal presumption which may be regarded as an assignment condition might include the legal presumption that in the after condition of a partial taking of real estate, the proposed public improvement is to be constructed expeditiously immediately after the date of taking and not delayed for years or decades as is often the ultimate practical reality.