expression pick whip vs property pick whip

[S_ A]

Hi,

I dnt understand the difference between expression pick whip vs property pick whip.  both write  the same  expression if  i whip preoprties of  one layer to another. 

example, two shape layers,  red square and  green square. if I whip scale of green to red square,  using 'property pick whip' it writes-  

thisComp.layer("Shape Layer 1").transform.scale

and if I pick whip sacle using expression pick whip it also writes- 

thisComp.layer("Shape Layer 1").transform.scale

😮 

why I need these two? they are doing the same thing  whats the real difference between theses two? Google fails me. only I get articles abt  parent pick whip.

There must be some main differences. what is that. please help me. 

[Rick Gerard]

They are just duplicates. There is no functionality difference. You just have to have the Parent/ Link column open to see both. 

[S_ A]

Thank you so much. I was dumbfounded . Thank you. 

[Kyle Hamrick]

"Multiple ways to do the same thing" isn't uncommon in After Effects. It's a huge program, and a lot of functions have multiple entry points, in an attempt to keep you from having to fish too deeply for them. Use whichever one works best for your context!

[S_ A]

 You r so right. People like me who just started learning after effects and developed a huge crush for this software, we find it very difficult that there is multiple ways to complete a single task.  I am grateful that experts like Rick Gerard and you help naive like us with guidance. thank you.