On a Saturday night recently two teenagers, David and Fofana, defied their parents' orders to stay at home and slipped out as night enveloped the rice fields.
More than 90,000 delegates from 151 countries roamed the exhibits, thronged the educational and promotional sessions and flocked to after-parties at night, enveloped in omnipresent technology.
Shop fronts, signposts, entire buildings are lit up — some with undulating and flickering effects — as the sun sets each evening, enveloping the entire city in an orange glow.
Delegates stood and cheered for much of the evening, enveloped at the end in the now-obligatory falling balloons as spotlights swept the crowd, jammed shoulder-to-shoulder in the aisles.
Being 220 metres (720 feet) up the hillside, your correspondent is usually above it all, though there are times when the marine layer is thick enough at night to envelop even his eyrie.
Everyone in the band shouted, "Val-pa-ra-i-so!" The crowd burst into applause and started to disperse into the darkness of the night that enveloped the city like a glove.
On a cold evening, darkness enveloped a lonely street in Harlem, but for the glow of fluorescent lights cascading from a storefront.
"Like this," he says, as we trace our names in fiery loops on the enveloping night.
At night when loneliness enveloped me, I would Skype the un-boyfriend.
But you want her, from morning until night, to be enveloped by a thick ecosystem of positive influences.
