  The measurement of the tunneling time (T-time) in today's attosecond and
strong field (low-frequency) experiments, despite its controversial discussion,
offers a fruitful opportunity to understand time measurement and the time in
quantum mechanics. In addition, as we will see in this work, a related
controversial issue is the particulate nature of the radiation. Different
models used to calculate the T-time will be discussed in this work in relation
to my model of real T-time, Phys. Rev. {\bf 92}, 052118 (2015), where an
intriguing similarity to the Bohr-Einstein photon box Gedanken experiment was
found. The tunneling process itself is still not well understood, but I am
arguing that a scattering mechanism (by the laser wave packet) offers a
possibility to understand the tunneling process in the tunneling region. This
is related to the question about the corpuscular nature of light which is
widely discussed in modern quantum optics experiments.
