I've started a list of some inconsistencies, as I read along here; will continue list as you all post!!

eace:
GG admits she took the sleeping pill and was drinking. Even if they were both drinking moderately he should have enough sense to know she never should have been in the water. He drove her there and drove her right down to the water's edge. Who in their right mind, who claims to have cared for her, would have allowed her to get into the water. Of course witnesses (more than one) claim she never got in the water, they got in their car and left.....I believe that is a serious inconsistency.
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GG stated that Robyn had taken a sleeping pill earlier in the day and had been drinking. Does that seem consistent with someone you would take snorkeling for their first time ever?
And it was very late in the afternoon---a very silly time to try and snorkel because the water is too dark because of the angle of the sun.
And the witnesses say they saw them walking on the beach, but never entered the water. Other witnesses saw them drive off without entering the water. Those are also inconsistencies in his story.
Add to it the fact that she was dressed with her make up done, her extensions all curled and done up, and she had been leisurely drinking and eating all afternoon---what makes
her suddenly want to snorkel that day?
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GG said he and Robyn went snorkeling, yet a witness said he never saw them go into the water during the timeline GG gave LE.
GG, according to a source, said Robyn had been drinking and took an ambien that day - then says they were a "sober couple".
The terrain GG pointed out to LE as the entry point of their snorkeling adventure, was too rocky for anyone but God to traverse barefoot
GG said the waters were rough at the time they were snorkeling, this was proved untrue
GG says there is a Dutch tourist guide for Aruba that states one should call their insurance carrier if someone goes missing during their visit - but also says his attorney told him to call. Which is it. It can't be the tourist guide because there's not one containing his referenced directive.
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GG claims they went into the water at a specific location and LE, witnesses are saying no way that happened.
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Funny, too, how they never found any blood on the rocks. She cut her toe on the large rock and no blood, had to go back to where they placed the towels to stop the bleeding and no blood, anywhere, except on the towel. When you cut your toe and it's bleeding, it bleeds alot but there is no sign of blood anywhere on, near or around that area. It was dry, blood was not going anywhere had it been there. Investigators were there within 20 minutes.....so where was the blood??? It's not like GG could ditch the towel as it belongs to the hotel and you are accountable for it. Sounds as if this could be another of T. Stein's "inconsistencies".
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Fact remains that GG gave a statement regarding where they went in. There was no mistake because there were markers on the ground. He pointed out the rock she cut her toe on. All of that was investigated prior to the reenactment. The reenactment was done because the facts did not match his story big time. He is the one who pointed everything out, he is the one who gave his statement if the facts don't match then this is why GG is their primary suspect.
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In this reenactment at the 2:07 point you can see the actor running and he appears wet. Next frame shows GG and he does not appear to be wet at all. Witnesses say his bathing suit was dry. So why would the actor still be wet and GG was already dry?? My guess is another inconsistency.
http://abcnews.go.com/GMA/video/robyn-gardners-final-moments-reenacted-aruba-14562389