diff --git a/src/ahora.gmo b/src/ahora.gmo
index c3e4c4e..c0ef16f 100644
--- a/src/ahora.gmo
+++ b/src/ahora.gmo
@@ -2,15 +2,10 @@
 lang=es en->{now}
 en qué andamos aproximadamente en estos momentos:
 
-programamos un nuevo generador de sitio estático para este {wiki}, llamado {esglua}.
-
-presentamos {alive computing dance} en el 10 aniversario de algorave, nuestro primer performance que utiliza a la {qiudanz technique}.
+desarrollando {jarotsim}, herramienta alegre para explorar y programar {máquinas de turing} al vuelo.
 
 en preparación para iniciar una posición de investigación en movimiento y computación.
 
-en recuperación de correr un maratón
-=> ./running.gmi {running}
-
 puedes encontrar actualizaciones previas enlistadas cronológicamente en el {log}.
 
 dependiendo de cómo hayas llegado aquí, puede ser que quieras saber {acerca} de compudanzas.
diff --git a/src/d-turing.gmo b/src/d-turing.gmo
index 284bb78..d7815ce 100644
--- a/src/d-turing.gmo
+++ b/src/d-turing.gmo
@@ -82,6 +82,10 @@ si la tabla no tiene una respuesta, entonces la máquina se detiene. el cómputo
 
 encuentra aquí {máquinas de turing} para implementar y bailar.
 
+# simulación
+
+podemos utilizar {turingsim} o {jarotsim} para simular estas danzas.
+
 # enlaces relevantes
 
 => https://www.cs.virginia.edu/~robins/Turing_Paper_1936.pdf on computable numbers, with an application to the entscheidungsproblem - alan turing 1936
diff --git a/src/img/screenshot_jarotsim-tapes.png b/src/img/screenshot_jarotsim-tapes.png
new file mode 100644
index 0000000..fafae21
Binary files /dev/null and b/src/img/screenshot_jarotsim-tapes.png differ
diff --git a/src/jarotsim.gmo b/src/jarotsim.gmo
new file mode 100644
index 0000000..8f72315
--- /dev/null
+++ b/src/jarotsim.gmo
@@ -0,0 +1,19 @@
+# jarotsim
+
+playful tool to explore and livecode turing machines. (work in progress)
+
+=> ./img/screenshot_jarotsim-tapes.png screenshot of jarotsim showing a series of states of a turing machine, each of them consists in bird with a hat over a tape with different tiles
+
+# about
+
+jarotsim is inspired by {turingsim} as a simulator of turing-machine-based performances like {d-turing} or {mub}.
+
+it embraces computing for fun, play and learning.
+
+the objective is to have a graphical user interface where one can edit / livecode the rules of the machine and its tape, and explore their effects.
+
+for the moment the idea is to have a maximum of 4 states and 4 symbols. according to Wolfram, they should be more than enough to explore complex behaviors.
+
+=> https://www.wolframscience.com/nks/p78--turing-machines/ Turing Machines: A New Kind of Science | Online by Stephen Wolfram
+
+as of now, all of the machines described in {máquinas de turing} can be simulated in jarotsim.
diff --git a/src/log.txt b/src/log.txt
index 1d55470..6854781 100644
--- a/src/log.txt
+++ b/src/log.txt
@@ -1,3 +1,4 @@
+2022-04-02T12:00:00-06:00	started developing jarotsim, a playful tool to explore and livecode turing machines	{jarotsim}
 2022-03-27T19:00:00-06:00	started using esglua, our static site generator	{esglua}
 2022-03-20T12:00:00-06:00	performed (a)live computing dance on algorave 10th birthday	{alive computing dance}
 2022-02-09T19:00:00-06:00	updated our introduction to uxn e-books with a new table formatting and some minor corrections	{publications}
diff --git a/src/máquinas_de_turing.gmo b/src/máquinas_de_turing.gmo
index cb71c3c..cdaa7af 100644
--- a/src/máquinas_de_turing.gmo
+++ b/src/máquinas_de_turing.gmo
@@ -2,7 +2,7 @@
 lang=es
 compendio de descripciones de máquinas de turing para implementarse de múltiples formas.
 
-ideales para bailarlas en modalidad {d-turing}
+ideales para bailarlas en modalidad {d-turing}, o para simularlas con {jarotsim} o {turingsim}.
 
 # la primera
 
diff --git a/src/now.gmo b/src/now.gmo
index 2c86cc3..814de77 100644
--- a/src/now.gmo
+++ b/src/now.gmo
@@ -2,12 +2,8 @@
 lang=en es->{ahora}
 what are we up to approximately now.
 
-wrote a new static site generator for the {wiki}, called {esglua}.
-
-we just performed {alive computing dance} on the 10th anniversay of algorave, a livecoding performance using the {qiudanz technique}.
+developing {jarotsim}, a playful tool to explore and livecode turing machines.
 
 preparing to start a movement and computing research position.
 
-recovering from {running} a marathon.
-
 you can find previous updates in our {log}.