Steep learning curve is actually the opposite, whatever you choose to use as the axes. If you plot time vs learning, a steep curve would suggest you gained a lot of knowledge in a short time. To suggest what's usually meant by the phrase, it would be a slow gradual rise, or - if you're not so bright - almost a flat line. If you plot time vs. what you need to know it's a downhill curve.
You are correct, both can be used.Does "everything is downhill from here" indicate something good or bad happening? What if you fall backwards? Does it assume the presence of brakes?
Aesop-like: The early worm gets eaten by the early bird.Similarly Aesop advises us to “Look before you leap,” but “He who hesitates is lost.”
Then there are all the pointless "gh"'s---through thorough thought though, knight (why the k?) draught, highway, cough, bough, enough, height, sigh, etc.Thank the Greeks for the "rh"s:
rhapsody, rheostat, rhesus, rhetoric, rheumatism, rhinoceros, rhizome, rhododendron, rhombus, rhubarb and rhythm, all being words derived from Greek
Jason Kidd, fine basketball player but no math whiz, said once when his team was mired in a losing streak, "We hope to do a 360 with our team going forward."There are people that confuse 360 with 180.
I suspect there are many folks whose family tree is a wreath.