Since case study designs center on one or a few cases and lack the controls usually thought necessary to an understanding of causal relationships, knowledge that
Case study designs usually lack necessary controls.
To see how the Dutch of a later era lived, climb the cobbled street of Hollander Slope (number 5 tram to the Ishibashi stop), where you'll see some red-brick and wooden clapboard houses with colonial-style verandahs and a rare sight atop houses in Japan chimneys.