Older people who have injured or infected toenails may find that their nails grow thicker and begin to curve. If the toenail has thickened due to a nail fungal infection then fluid may gather under the nail and it may begin to release an unpleasant odor. Day to day activities can put repeated pressure on the toenails.
Definition of luminary. plural. luminaries. 1 : a person of prominence or brilliant achievement a literary luminary a luminary in the medical profession.
When looking at software engineers I see 4 tiers of skills: Luminary, Senior, Mid-Level and Junior. Luminary (10+ years) is one who has mastered a skill and has set about improving their respective discipline. Some examples include: Ted Neward, Uncle Bob Martin, Donald Knuth, Oren Eini, Peter Norvig, Linus Torvalds.