On 26/7/2006 the author had some gall bladder surgery, where he was forced to undergo general anesthesia. The author carefully monitored his consciousness during the procedure, so here he is attempting to mathematically model the situation.

Assume an "event" is a point in H, or a coordinate quaternion quadruple q=(t,x,y,z), with t,x,y,z>0, similarly to how an event is modelled in physics (so a movie or regular flow of consciousness for example, would be continuous streams of quadruples q(t)=(t, x(t),y(t),z(t)), with no relativistic effects present, so time t is (for our purposes) linear. So we can assume that time and the corresponding streams of events are continuous.

The experience during the shut-down of consciousness was as follows: First, upon the injection of the anesthetic, there was a slight disorientation, which gradually increased. At some point, loss of consciousness occurred at t_{1}. But the subject (the author) never "experienced" actual loss of consciousness. Instead, the author experienced an awakening into some other forward time t_{2}, with t_{2} = t_{1} + 3 hrs, after all the operations were completed.

Using the above notation, and if we assume that the actual moment of unconsciousness occurs at t_{1}=1 and the moment of awaking occurs at t_{2}=t_{1}+3, at loss of consciousness the author was located at q(t_{1}), with:

q(t_{1})= (t_{1},x(t_{1}),y(t_{1}),z(t_{1})) (in the anesthesiologist's room)

and suddenly the author awoke to point q(t_{2}), with:

q(t_{2})=(t_{2},x(t_{2}),y(t_{2}),z(t_{2})) (in the anesthesiologist's room, again).

The author's position was almost identical, so we can assume that x(t_{1})=x(t_{2}), y(t_{1})=y(t_{2}) and z(t_{1})=z(t_{2}).

If we describe the time t of uninterrupted normal consciousness as a linear function T(t), the following graph models accurately what happens from the patient's perspective:

Time T(t) as seen by the patient

But the above function is:

T(t)={t, if t<1, t+3, if t>1}.

Converting in terms of the Heaviside step function H,

T(t) = t + 3*H(t-1)

In general, if the moment of unconsciousness occurs at t=t_{1} and if the total unconsciousness time is t_{Tot}=t_{2}-t_{1} then the time of the event stream as experienced from the patient who "goes under" is described by the function:

T(t) = t + t_{Tot}*H(t-t_{1})

Some interesting facts: The patient always measures time along the y-axis. There is a jump discontinuity at t_{1}=1, where the patient instantly jumps from time t_{1}=1 hours to t_{2}=4 hours. The derivative of T(t) is dT/dt=1+t_{Tot}*ä(t-t_{1}), with ä being the Dirac delta:

Rate of change of time dT/dt as seen by the patient

In other words, from the patient's perspective, time passes at a constant rate dT/dt=1 hr/hr (for our function), except exactly at the point t_{1}=1, when there is a *singularity*. q(t) for t_{1}≤t≤t_{2} is undefined from the patient's perspective. This is *non-existence* for a duration of t_{2}-t_{1} hours, so this time is actually lost to the patient, but the patient doesn't experience it, except as an instantaneous singularity which gets lost in the subsequent stream of events.

Now you understand why people are afraid of surgery. Not because of the *actual* surgery (there is no pain under anesthesia), but because of their encounter with *non-existence*. Non-existence implies *total loss of control* and the conscious mind instinctively knows that under total loss of control there might be *danger* for its survival, hence total anesthesia is something that the mind instinctively avoids.