The argument that the universe can come into existence from nothing depends on things happening without a cause. The video "V9.2 Krauss Conclusions part 1" (https://courses.edx.org/courses/course-v1:ANUx+ANU-ASTRO4x+2T2016/courseware/6f96fcc11d714a79b157282b73e11eea/ad4250341c1741ebafb5267cf91553a9/?child=first) uses this example - "The photons being emitted by the lights in the studio were emitted when an atom deexcited. But there was no cause of it." Even at the beginning of the previous century, physics recognized a fundamental defect in this reasoning. It arose in relation to the model for electronic structure proposed by Japanese physicist Hantaro Nagaoka. A charged body cannot sustain orbital motion because it is accelerating and therefore loses energy due to electromagnetic radiation i.e. an atom deexcited (electrons lost orbital motion), photons were emitted, and acceleration was the emission's cause.

To speculate on the cause of the deceleration (with science references) - gravitation may not exist only between particles but particles may be composed of interacting gravitational and electromagnetic waves (as explained in my numerous posts on this site about my vector-tensor-scalar geometry). Physicist Michio Kaku writes,

"When we solve Maxwell's equations for light, we find not one but two solutions: a 'retarded' wave, which represents the standard motion of light from one point to another; but also an 'advanced' wave, where the light beam goes backward in time. Engineers have simply dismissed the advanced wave as a mathematical curiosity since the retarded waves so accurately predicted the behavior of radio, microwaves, TV, radar, and X-rays. But for physicists, the advanced wave has been a nagging problem for the past century."

Albert Einstein's equations in the theory of General Relativity say gravitational fields carry enough information about electromagnetism to allow James Clerk Maxwell's equations to be restated in terms of these gravitational fields. This was discovered by the mathematical physicist George Yuri Rainich. [George Yuri Rainich - "Transactions of the American Mathematical Society" 27, 106 - Rainich, G. Y. (1925)] So gravitational waves also possess retarded and advanced components. It's known that the electromagnetic component we're familiar with (retarded waves going forwards in time) boosts electrons to higher orbitals (excites them) during their process of absorbing photons. So it's plausible that when the process is reversed (electrons are de-excited and emit photons), advanced waves that travel back in time are responsible.

What could be the cause of retarded and advanced waves? Eons from now, a model of the cosmos might be built that uses pi and imaginary time, and resides in Virtual Reality (artificial, computer-generated simulation). The entanglement (quantum-mechanics style) in the simulated universe is unable to remain separate from the entanglement existing in our perceived reality because computers using so-called "imaginary" time (which is defined by numbers with the property i² = −1) removes all boundaries between the two universes. This enables them to become one Augmented Reality (known now as technology that layers computer-generated enhancements onto an existing reality, but seen here as the related layering of virtual reality onto other points in time and space). The poorly-named imaginary time of physics and mathematics unites with pi (both are necessary to generate an infinite universe: alone, unbounded imaginary time is finite).

On the subject of the calculating, deterministic nature of computers - I think we rely too much on the idea of biological evolution. Obviously, evolution does exist - we see it all the time when we study how living things adapt. But that doesn't mean it can be extrapolated to explain everything about life (sorry, Mr. Darwin, but I can't see it explaining the origins of life). Perhaps life began when our far distant descendants travelled to a time before life existed, collected amino acids and water etc from comets and dust etc, combined the molecules, and did some unimaginably sophisticated genetic engineering.

Or, according to the video, is this entire post just "supernatural shenanigans"?