I have been reading through some of the discussions that I missed while I was away for a few months and one led me to brush up on the
pocket dimension theory. According to the Compendium there are only two loose ends, one of which is then immediately explained. However, the last one is not gone into in any detail.
Another inquiry concerning the Pocket Dimension reads, "if Lavos could observe the eras, why didn't he notice Crono and his crew traveling through time on a mission to defeat him and take action?"
The reason it gives is that regardless of when Chrono and company enter the pocket dimension Lavos will be at his most powerful, but that does not really answer the question because if I knew something was gaining power in an attempt to destroy me I would still take care of it when it was weak, not wait until it was strong enough to threaten me. I was thinking about this and came up with several possible explanations. I wanted to hear what others thought and perhaps get some additional explanations. If we can come up with an agreed upon reason then it can be added to the compendium.
First off, how exactly does the pocket dimension exist relative to time? We know it is connected to all points in time, but does it simultaneously exist at all points in time, or only when the connection to the dimension is made? If it exists at all points in time then:
A. Once Lavos enters the earth and establishes the pocket dimension he is then connected to all points in time simultaneously. Since everything happens at the same 'time' he would then be almost instantaneously attacked by the party as they exist at the end of the game. Therefore, he never actually examined them going through time because all observations of them happened simultaneously.
If, on the other hand there is still some regular flow of time with regards to the pocket dimension then:
B. Lavos was simply overconfident or was not actually able to perceive them reliably. To him all other life forms are insects. Humans have a tendency to think little of most life forms that are very small, yet many of the smallest things are what have the highest success rate of actually killing us (small insects and arachnids, viruses, bacteria, et cetera). Things that are too small and live such a short life we are barely able to comprehend them have been killing us for thousands of years despite the fact that we generally do not take them into account.
C. They were protected by The Entity. If The Entity can influence events and create dimensional rifts and time vortexes, maybe it could also mask lifeforms. In that respect even if Lavos had been looking for threats maybe it was unable to perceive them. Until the final battle(s) whenever the party encountered Lavos it never seemed to pull any punches, killing a main character among other things. At that time maybe it realized they were a threat and went on the offensive but otherwise had no knowledge of their existence.
There is also another possibility:
D. Lavos wanted to be destroyed. Considering Belthasar's Xanatos Roulette in Chrono Cross, who is to say that Chrono Trigger was not a Xanatos Roulette of Lavos? Maybe it wanted to be destroyed because it knew it would be sent to the darkness beyond time where it could become the time devourer and destroy all of space and time. Any points that also needed to happen, such as Schala also needed to go there could have been orchestrated by Lavos and it is no more unbelievable than Belthasar's plan. That could have even been why it came to Chrono's planet, because it was here where it could set up the right people to merge with to become the time Devourer and it knew The Entity would intervene with heroes to destroy it.