For the first time, information on the spider-effect was reported at the International Symposium “Perestroika of Natural Science” (“Reconstruction of Natural Science”) held in April of 1996 at Volgodonsk town (Russia). The discovery had remarkable repercussions among attendees, and subject of RHYTHMODYNAMICS evoked great interest as a new direction of science. At an insistent request of colleagues, I publish comments made by the head of the Symposium, scientific secretary of Joint-Stock Company “Atommash” N. I. Bakumtsev and by V. F. Stepanov, a physicist, a leading researcher of Moscow State University and, what is important, a formal opponent of the ether concept.

N. I. Bakumtsev: At the first acquaintance with the works of Ivanov, they seemed to me to discover new regularities which before were not revealed and taken into account. In our view, similar interference takes place for gravitational, magnetic and sound waves. As to gravitation, having studied working of spider-effect in reaction motion, we will be able to understand further applied significance of the discovered phenomenon in propulsive devices of new generation.

V. F. Stepanov: I am taking a great interest in theoretical studies in classical field theory for a long time. I keep watching on works of Ivanov since 1990, and results he obtained appeared to be unexpected. He deals with problems in such field, that many consider to be well studied and, so, dull and uninteresting. Ivanov discovered quite unexpected and startling effect (spider-effect).

At attentive consideration, it is found, that if we try to look from the new viewpoint at such fundamental notions as force, motion, then we appear to be shocked in some extent, i.e. the view is quite new, unexpected, and it puts out of countenance those who are well acquainted with usual, standard notions of motion, force, velocity. For example, if we consider simple systems being in arrhythmia, then these systems behave so unexpectedly, that doubt is cast even on views of the greatest authorities.

I consider this phenomenon to be not just new, but also promising. Undoubtedly, it is a subject for investigation, after that new devices which will have their application will be manufactured.