state changes for different values of the variable of interest, the Fisher information requires to know the probability distribution of possible experimental outcomes for a given value of the variable of interest. Therefore, it can look for sensitivity bounds for measurements by including [*technical characteristics*]{} of specific detection schemes [@jordan2014]. A brief comparison between both approaches will be done towards the end of this paper.

One word of caution will be useful here. The concept of weak value amplification is presented for the most part in the framework of Quantum Mechanics theory, where it was born. It can be readily understood in terms of constructive and destructive interference between probability amplitudes [@duck1989]. Interference is a fundamental concept in any theory based on waves, such as classical electromagnetism. Therefore, the concept of weak value amplification can also be described in many scenarios in terms of interference of classical waves [@howell2010]. Indeed, most of the experimental implementations of the concept, since its first demonstration in 1991 [@ritchie1991], belong to this type and can be understood without resorting to a quantum theory formalism.

An example of the application of the weak value amplification concept: measuring small temporal delays with large bandwidth pulses. {#an-example-of-the-application-of-the-weak-value-amplification-concept-measuring-small-temporal-delays-with-large-bandwidth-pulses. 