DUH Sign in S'pore

Here's a sign that I saw somewhere in Tanjong Pagar, the financial district in S'pore:

Wassup with that sign? See the nice shady trees, paved walkways, green fields... it's such a nice spot in the midst of Singapore's financial district. What's the risk? And here's a list of "risks" my imagination has come up with:

1. Snapped tree branches that will land on one's head

2. Mysterious holes that will swallow unsuspecting pedestrians

3. Bermuda Triangle

4. Our capable and well-camouflaged "Thinking Soldiers"