It’s cross-section along a ray is:
The adjacent possible is a thin band between those two zones. Innovations change the world when they land there, stretching boundaries and changing habits — but not so much that the technology keeps glitching or makes us feel uneasy. When an innovation hits this sweet spot, the result is user delight and new consumption patterns that create popular enthusiasm and rapid, broad adoption.
，这一点在heLLoword翻译官方下载中也有详细论述
Looking for a new pair of earbuds? The 1st generation Beats Fit Pro are on sale once again at Amazon, and this time they've dropped down to their best-ever price. As of March 6, you can buy them for $129.99, saving $70 on the list price. This deal is only for the white set.
▲ 图为标准版 Studio Display