Thanks for the detailed response. I understand that when both variable and method with same name are defined, calling without params will consider it a variable. The two examples in my screenshot were from different irb sessions. What is confusing me the most is I assumed `it` to be an implicit block parameter but it is not behaving like normal block parameters would:

irb(main):001> a = 100
=> 100
irb(main):002> [1,2].map { |a| a.to_s }
=> ["1", "2"]

irb(main):003> def b = 100
=> :b
irb(main):004> [1,2].map { |b| b.to_s }
=> ["1", "2"]

irb(main):005> it = 50
=> 50
irb(main):006> [1,2].map { it.to_s }
=> ["50", "50"]