If there's an interest in such posts, I will write more. The idea is that I will provide examples of lesser-known features of Ruby. Later on, I will do a longer write-up where I will provide a solution and explain it unless someone will do it before me :) Let's say I have a program I can't modify: ```ruby def gen_proc secret1 = rand secret2 = rand proc do p secret1 * secret2 nil end end my_proc = gen_proc binding.irb ``` It will launch an interactive Ruby console. When I type: ```ruby my_proc.() # .() is a shortcut of .call() ``` It will print some number, but each time I will type this expression, it will be the same number (until I relaunch the console). This number is derived from `secret1` and `secret2` variables. Those variables are stored somewhere - but where? What is the best way for me to obtain values of those variables? Do note that I can't modify the code :)