paragraph 1: a loner
she’s got her head in her hand, flipping back and forth through a spiral-bound notebook covered in arcane scrawls, thick handwriting in blue and black ink across each sheet. Mathematical symbols and variables float and spin over each ruled line. Her dark hair falls down over her face, obscuring her features, but her bent posture over the notebook is enough to suggest that she’s been here a while already, though it’s only just after noon. She’s at a computer carrel but she’s not using the machine; the keyboard is pushed away at an askew angle, nobody could type anything decent with it. Now she’s tapping at her phone; she’s not so alone after all.
paragraph 2: a couple’s looks and interaction
There are no couples here that I can see, but outside a couple of young students, each in baseball caps, is strolling. She’s got one arm at a right angle through her purse while the other is thrown front and back with force, like she’s really trying to get wherever it is she’s going. She’s got denim shorts over dark tights. He’s got his hands in the front pockets of his zipped hoody, and a bent aspect to his neck, a bit of a hangdog expression. She’s smiling but his face is neutral as it takes in the concrete they walk over.
paragraph 3: how a waiter or bartender interacts with customers
Well this is even more difficult; can’t say who here might work as a waiter or bartender, though surely someone does. They’re not interacting with customers, though, just walking and working or surfing the web. The people at the front desk behind me are interacting with customers, in a sense, but they’re concealed behind a row of stand-up short-term computers, not carrels exactly because they don’t have dividers the way the sit-down longer-term computers do, and anyway I’m sure most of the library employees are browsing the web themselves. They always seem to have a slightly haughty expression, looking down their noses at their screens, right hands resting gently on the mice at what I assume is not a great angle over years of sitting on a stool and occasionally addressing inquiries about overdue books or the location of this or that. This is the biggest and most famous library on campus, though really that might not be true.