Prediction by convolution works best when the reverberation is all in shallow layers. Then it is like a source waveform. Cardiovascular research is well integrated with routine practice, whereas pulmonary research is not. I compare this to migration and velocity theory being a good guide to industrial practice, whereas deconvolution theory is less so. The larger gap between theory and practice is something to be aware of.
Some fields are more resistant to direct attack.
In them you progress by more indirect routes. This is confusing for the student and demoralizing for the impatient. But that is the way it is. The next few pages show land data with buried geophones confirming that source waveforms are mainly near-surface reverberation. Then we turn to departures from the convolutional model.