Sudden endings can feel abrupt.
But transitions often feel abrupt.
The early pupal wing picture in Matakatsu does look very abrupt, with very high Ds near the hinge, but confusingly Figure 3 figure supplement 1C (7 hours) does not look like a step because it cuts off the proximal wing with the highest Ds levels.
1C" (24 hours) looks pretty abrupt proximally, but there looks to be a gradual gradient along the bit that extends out between the central veins.
A bright door, isolated in the middle of the page, looks as abrupt as the exclamation mark it strangely resembles.
Having been taught the uniformitarian view, Alvarez wasn't sure what to make of what he was seeing, because the change, he later recalled, certainly "looked very abrupt".
But he added: "When we look at the abrupt changes in the climate and weather patterns in our country during the last 10 to 15 years, it becomes easy to link this to the changes taking place around the globe".
Our results show that observers were able to track more than one item when looking for an abrupt change, but the capacity was low.
After a steep and winding final stretch of road we reached a rather abrupt looking staircase--our final ascent toward the crater rim.
