[ventus45]

slats11
"MH370 was most likely a criminal act."
correct

slats11
"The plane was deliberately diverted, and then flown under human control with the intent to make sure it was never found and would disappear forever."
correct

slats11
"the motive was to minimise the chance that the plane will ever be discovered"
correct

slats11
"hiding in plain sight at normal cruise levels"
correct

slats11
"Going somewhere specific = "
correct (hint#1 - a very specific place)

slats11
"Why go south? There is nowhere to fly to"
false - (hint#2 - think again - refer to hint #1)

slats11
"The perfect time to ditch would have been dawn - enough light to see the swell"
correct - desireable - but not essential - in the specific place - (hint#3 - think again - refer to hint #1)

slats11
".......the lights of any stray ship would have been easy to see."
correct - essential - (hint#4 - think again - refer to hint #1)

slats11
"we are looking at a point near the 7th arc,"
correct

slats11
" but as far SW as possible along that arc"
partially correct (hint#5 - think again - refer to hint #1)

slats11
"At the time of the final ping, the solar terminator was in this general area - although a bit to the west of the current search area. It was running almost due N-S (near the March equinox) across the 7th arc. West of the terminator, the flight ended in darkness. East of the terminator, the flight ended in light.
correct

but ................

hint #6 - do not assume that the BTO's are anywher near as "accurate" as the "experts" want yo to beleive, as in, good to +/- 5nm. They are not.  They "want" you to think that, so that they can "credibly" define a small search swath width.
First, the timing uncertainties in the equipment have been downplayed excessively, particularly the aircraft satcom equipment. The timings are not as stable or as "defined" as they would have you beleive. This means that the arcs are not a clearly defined "line" of position, but a in fact a fairly wide, fuzzy, "zone" of position, up to 150nm wide.
Second, the laws of physics, force any timing errors into "radial shortening" of the arc zones of position, ie, slightly NW towards 3-F1. That means, that the "outer eddge" of the zone (radially from 3-F1) is defined by the "least" timing errors, and the "inner edge" of the zone (radially from 3-F1) is defined by the "most" timing errors.
Statistically, the combined effects of both factors, drives the highest "probability" of position within the zone, towards the inner third of "the zone", ie, assuming the zone is 150nm wide, towards the inner "50nm" mark.
This drives the "real" position of the aircraft much further west of the "official search swath".
In other words, they will never find it, because they are deliberately searching an unrealistically narrow swath, which, being the outer edge, has the least possibility of containing the aircraft.
Since they know this, why define such a narrow strip ?

hint #7 - finally, do not assume, that the final ping BFO's, which are the "basis" for the "official" spiral dive theory, is the correct end of flight theory either, it is not.  It is complete, utter, and absolutely, nothing more than "convenient" garbage, again, to convince the public, that the aircraft must have crashed "very close to the arc", which again, is designed to convince the public, that the required search swath width is small. In point of fact, there is a perfectly valid explanation for these BFO's. Think multipathing. Remember the BFO's at the beginning, initial power up at Gate-C1 ?  Put your thinking caps on.
hint #8 - refer - yet again - to hint #1 !!

So, we now have to ask a very serious question.
Do "they", as in, "the involved governments" really want to find it - or not ?
Was it really a mystifying "accident" - or a crime ?
Do "the involved they" - "know" - with certainty - that it was a crime ?
If it was, and they know for sure it was, perhaps "they" even know, by whom and why.
If that is the case, the issues involved, may be so "sensitive and secret", that the last thing any of the "involved governments" would want, is the truth getting out.

If true, we have to ask, has the last year, been nothing but an elaborate "show" ?

Will the search of the 60,000 square kilometres, in the middle of nowhere, be enough, to let the world, let it go ?
Is that what all this has really been about, from day one ?