If a cue is going to help us recall information, it needs to be present when we learn and when we retrieve. If the cues are different, some will be forgotten and if the cues are not present, they will again be forgotten. Mnemonic techniques are also used as cues for retrieval (something that is meaningful) and external cues (context dependent) and internal cues (state dependent) are also encoded at the time of learning, so these need to be consistent to be able to remember