I find the geography doesnt really get thrown around a lot. Lee Kuan Yew's boasts that the city became rich despite "no natural resources" does though, which i find to be misleading.
There is obviously more to the story than just the port but it's important to understand the inbuilt advantages the city did have given the obvious incentive to "replicate" what happened, especially when the story told by the island's cult of personality was so keen to downplay them in favor of his genius leadership and the grit and determination of the people.
(I say cult of personality because I queued up to see his dead body lying in state... and the experience with him, mao, kim jong il and kim il sung wasnt all that different)
Most of the economic development was critically dependent upon the port and its status as a transshipment hub at a global crossroads. Getting Shell to build a refinery in cape town or bhutan would have been a lot harder.
The geography of Singapore gets thrown around a lot to detract from how much Lee Kuan Yew’s deliberate decisions made Singapore what it is today. Which is a shame because that makes it hard for other developing countries to learn from Singapore’s example.