In "Once Upon a Time," how well does each improvement to the house work?

Interestingly, each "improvement" the couple makes to their security works just fine for keeping intruders out, but is ineffective in assuaging their fears. After all, the couple's home is never invaded by "people of another color," even when the unemployed "loafers" come and hang out in their suburb. The electronically controlled gates serve as a fascinating plaything for the little boy, but soon the housemaid hears of a burglary in the suburb where a maid...

Interestingly, each "improvement" the couple makes to their security works just fine for keeping intruders out, but is ineffective in assuaging their fears. After all, the couple's home is never invaded by "people of another color," even when the unemployed "loafers" come and hang out in their suburb. The electronically controlled gates serve as a fascinating plaything for the little boy, but soon the housemaid hears of a burglary in the suburb where a maid was tied up and locked in a cupboard, so the couple takes her advice and adds bars to the windows. They don't have a break-in, but the cat is able to get through the bars, suggesting that they are still not safe. The burglar alarms are ineffective for others' homes because they are tripped so often by cats and mice that they actually end up hiding the sound of burglars sawing through iron bars. They build a higher wall, but the reports of burglaries in the neighborhood continue, although their house is not breached. The cat can still scale the wall, though, and they find smudges they attribute to "the feet of unemployed loafers" on the outside, which tells them intruders are trying to get in. Actually, it could have just as well told them that someone tried but was unable to because the wall was effective. The couple allows those smudges to increase their fear. They then install the Dragon's Teeth. Now the cat stays inside, so they believe their remedy is effective. Unfortunately, the Dragon's Teeth cut two ways, and the family finds itself living in a "concentration camp." Their son ends up dying in the "razor-bladed coils." Ironically, the one "improvement" that finally makes them feel secure is the one that brings unimaginable tragedy.