Hi folks! Lukas (Lukas1994) and I built this.<p>If you have a spreadsheet model, it lets you answer questions like "Which variable in my model is the most important?" and "If I underestimate X by 10%, what's the effect on Y?".<p>Most models are built on assumptions and estimates — if you run a company, your financial model will probably include an assumption around your customer growth rate in the future. If you use this model to make decisions — "How many people can we hire in Q4?" — then it's important to understand how sensitive these decisions are to your assumptions. It may turn out that overestimating your growth rate by 10% means you can only hire half as many people, in which case you'll probably want to hire a bit more conservatively. This analysis is pretty cumbersome to do in spreadsheets.<p>More broadly, we think there should be a better way than Excel to crunch numbers and do modelling, and we're trying to build it (<a href="https://causal.app" rel="nofollow">https://causal.app</a>). Would love to chat if this sounds interesting: taimur@causal.app :)
Hi Lukas.<p>Thanks for making this.<p>I will ask the obvious question: how is this different from the sensitivity analysis provided in the built in data table functionality?<p>I'll say a little more: I've seen people typically take a datatable and run it over a range of variables and then make some tornado plots.<p>I just googled around and there is a lot of noise but this one seems to have a clear explanation of what I mean:<p><a href="https://www.f1f9.com/wp-content/uploads/2019/05/F1F9_TornadoCharts_EBook_03a.pdf" rel="nofollow">https://www.f1f9.com/wp-content/uploads/2019/05/F1F9_Tornado...</a>
In fact there is an example
of this kind of sensitivity analysis tool already offered at <a href="https://www.getguesstimate.com" rel="nofollow">https://www.getguesstimate.com</a>
(not my venture, but a friend’s). It’s like a spreadsheet with uncertainty and sensitivity analysis weaved in throughout.
I don't want to dismiss this out of hand, but what does it do that the Excel Solver doesn't? Excel, LibreOffice Calc etc. are <i>very</i> comprehensive tools, that include a lot of stuff beyond the basics everyone is familiar with.
Congratulations on launching!<p>I tried sending an email the the address given in your website, but my message bounced back with an error:<p>"<hi@casual.app>: Host or domain name not found. Name service error for
name=casual.app type=A: Host not found"
Do you have a sense for how many people are competent modelers enough to use a tool like this- AND who work primarily in excel? My instinct would be to say small, but it is excel, and I suppose it wouldn’t be the craziest thing I’ve heard to learn otherwise