Event Sourcing Is a Simple Thing to Deal With but What Is the Difficult Part?

Event sourcing is really pretty easy to me the difficult part is migration right i would just call it i guess migrations but let's say you have a an entity oh i'm quite happy with ddd terms i love ddd okay. over the past few years actually it hasn't been that amiable to travel to no um to ben kuver but i look forward to when we can do that and yeah definitely we'll get togetherUm i i did want to ask you something or make a statement you you said Um that event sourcing is reallypretty easy and i agree with that it is pretty easy  but how should someone view that how do you solve those problemsYeah what actually came as