But I can also picture how large-scale disasters happen, looming catastrophes other people sometimes fail to see. This chapter is about the need for visual thinkers in all kinds of potentially dangerous situations. Visual thinking does not enable me to predict the future. But it does allow me to home in on design flaws and system failures that, unaddressed, can lead to disaster. Yes, we absolutely need engineers, scientists, and mathematicians to discover and formulate solutions to twenty-first-century problems. But we also need the people on the ground, the builders and installers and
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