# Ex­ec­u­tive summary

Here in Part 1, we will define a for­mula for the ex­pected value (EV) of the EA Ho­tel, rel­a­tive to donat­ing to other EA or­gani­sa­tions, called . We will then fac­tor each of the el­e­ments of as much as we can, and pre­sent our best es­ti­mate for each of these fac­tors, us­ing data gath­ered from cur­rent res­i­dents. In Part 2, we will use these es­ti­mates as an an­chor for defin­ing a plau­si­ble range of val­ues for each fac­tor, and do a Monte Carlo simu­la­tion on them. We aim to show 1) that un­der a wide range of as­sump­tions, the ho­tel is higher EV than the al­ter­na­tive and 2) a few show­cased val­ues for that will match differ­ent po­ten­tial donors.

# 1. What is the rel­a­tive EV of the EA Ho­tel, rV?

Since the ho­tel is a meta-char­ity that hosts peo­ple who are work­ing on pro­jects that range as broadly as EA it­self, we will not try to calcu­late ac­tual EV, as in QALYs or some other stan­dard­ised mea­sure. We will in­stead at­tempt to calcu­late rel­a­tive EV, which is EV di­vided by coun­ter­fac­tual EV.