[en] In spite of their success in describing hadron mass spectra, bag models have been largely unsuccessful in explaining bag dynamics. In particular, bag models have failed to provide an insight into the quark effects in nucleon-nucleon interaction, nuclear structure, etc. This appears to be largely due to the lack of an explicit mechanism for bag formation in the MIT-type picture. Some of these questions appear soluble, provided the bag is generated dynamically as in the soliton bag model. Related questions, as e.g. the Goldstone mechanism for the pion, appear more fundamental and are not likely to be resolved within the framework of bag models. Another problem, which is not yet completely solved, is the dynamics of bag interaction with an external probe, e.g. a photon. An understanding of such interaction is necessary in order to calculate hadronic form factors, magnetic moments and other bag properties. Equations for the recoil corrected magnetic moment and the charge radius of the proton are given; and calculations of the recoil corrected electric, magnetic and axial form factors of the nucleon are discussed