"Exactly"

"They did, for Freshwater and Saltwater, but do realize that in Saltwater Applications the Plastic Density to Porosity applications, works a Desalination, and that plastic Bag is usually in place per Layer, only until it Sets, not: Stacked Upon, 6 layers High, as this Crazy Collage Suggest. Which if you spray WD40 between these Photographed Installs, you got slippy slidey Blocks, that Fall on Toes and Feet and Infant Heads. Are these gonna pay for Security Personnel to Look out for those Dreaded Vandals with WD40? No. You'd be Better off Tapping a 39 cent Funnel or 6 inch of a Dowel in Each of the Bags, maybe with a Rubber Mallot Made of Duct Tape according to Directions from a Myth-busters episode than to 'Stack 'em as you buy 'em' as this crazy collage suggests...One Good Flood, and the entire Structure goes Bye Bye, simply because: The Plastic that Sakrete and Quikrete contain in is not Engineered to the Correct Density:Porosity Ratio to Effect this Purpose as Safe and Persons before using these should indeed ask their local Zoning Committee, or Code Officer or whomever in their Nation supplies Construction Permits, if this is even Acceptable in their Area.I doubt it ever would be: Everywhere. They as I likely say: 'Rather than Scrimp on Water, like Misers, you instead Pour 16" Square Pipes with 10" Reusable Logs, and use Proper Water Ratios, to Accomplish Better, with same Costs'"

"Have you never heard of Corrugated Cardboard? Effect is Same, in 20 years or less, the Projection is, they who Look at the Expense of Doing this Twice Poorly, rather than Once Properly, end up saying: 'Next Time, we May as Well Pour Stepping Stones in Tupperware'."

"Great saying. I have Seen that inactivity in inaction.I have a saying on same: 'If you want something to last, never hire a moron to do what yourself can do better in half the time'In 25 years, ponder: Do these Construction Sites as presented here, atall show the Crumbly Remains of these 'Easy Lego-like Builds' they are suggesting? Doubtful. Another fine saying is: 'The Stones along the Lazy Man's Route always Erode the Swiftest'.If you want to build Lego-Land Styled  Architecture, You build a Composite Frame to interlock them, just like it always has been, even since before I-Beams were first introduced to Civil Engineering."