Brian Young wrote:It is overridden by the movie.
No explicit contradiction, so it's not. Plus Ackbar states that the shields have to be knocked down, which is explicit evidence against semi-permeable shields.
Brian Young wrote:But even if not, what about all the other examples? Executor is but one of nearly 50 examples. The argument does not hinge on whether Executor was overwhelmed by the relatively diminutive Rebel fleet or not. Can you "hand wave away" all those other examples, including the explanations given by Anakin and Dennis Muren? That is like saying "I have a problem with example number 17, therefore none of the other 45 examples are valid either."
First of all, it's not just the Executor. The number of examples from lower canon is rather irrelevant whether 3 or 3000. It's not the first time we've seen something fundamentally wrong repeated many times by lower canon. The most famous example is probably the 8-km Executor, but that's far from the only one. TIE fighter shields, ISD shield dome Achilles heels comes to mind.
Secondly, you've cherry picked your evidence. Maybe you have 45 something examples from TCW; how many examples are there of shields in TCW NOT being permeable? At the very most you're proving that some shields in the Clone Wars era are permeable.
ANH: Death Star 1 has a non-permeable hangar shield that you have to open up in order to land. The same ship also has 'defences' which aren't tight enough so a one-man fighter can slip through it. Obviously it has shields of both types. It also specifically has a port ray shield which protects against energy attacks but not physical ones. That's at least three types and only one applies to your argument.
TESB: Ships take hits from asteroids directly on the armor without noticeable damage or visible shields while one asteroid hits the conning tower on an ISD and damages it. Shields weren't visibly protecting the ship in either case, so it only proves that it didn't have any shields on that would protect against physical damage.
ROTJ: An ISD hit by a Y-Wing which vapourized. The DS2 shield projected from the Sanctuary Moon was also completely impregnable to ships of any kind; no attack is performed until the generator complex was sabotaged and the shuttle the commandos came in on had to have the shields lowered before they could land.
TPM: Trade Federation Droid Control Battleship's shields are utterly impregnable to the N-1 Naboo fighters although the fireballs around it measure up to 200 m in diameter (whether from the fighters or from the TF interception quad lasers). Vulture droid fighters fly out of the open hangar and instantly after Anakin fumbles into the ship. No evidence of any active shield there whether semi-permeable or not.
Obviously the Gungan shields are semi-permeable, but that's hardly galactic standard equipment. It only proves that the technology exists.
AOTC: Droideka shields were initially thought to be semi-permeable, that the droids literally stuck their guns out of their shields to fire. Secondary canon later made these into explicitly NON-permeable shields, which directly contradicts TCW (don't remember the source tho). Secondary canon later contradicted itself and said there's a weak spot on top of the shields which Jedi can penetrate with a lightsabre. However, that's not evidence for the shields being semi-permeable, it only proves that a weak spot on a shield is more easily penetrated by a sufficiently powerful weapon.
ROTS: The Invisible Hand's hangar is closed by a shield which is NOT semi-permeable.
In other canon, the Buzz droids have 'shield penetration technology'. That's probably a fumble in canon assuming that Obi-Wans Delta-7 shields had to be penetrated before they could land, whereas we know since TESB that you can land on a ship that hasn't extended shields. In either case, it's a direct contradiction to 'semi-permeable shields'.
Summary of evidence for semi-permeable shields: Two, of which one is a single system out of several on a unique ship and the other belongs to a unique culture. Evidence against? Plenty and overriding secondary canon, not to mention that the evidence you brought up doesn't establish how common semi-permeable shields are even in the CW era.
Yep, I'm posting several months after the fact. I'm a busy guy with a family. Still, I don't like leaving things hanging if I can help it. Finally, I'd like to thank Brian Young for actually bringing a new take on old news, blowing some life into the by Internet standards ancient VS debate.